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DJI announces Mic Mini wireless microphone for smartphones and cameras
6:37 am | November 28, 2024

Author: admin | Category: Mobile phones news | Tags: | Comments: Off

DJI has announced the newest member of its wireless lavalier Mic series, the Mic Mini (not to be confused with the Mac mini. This new model is smaller than the Mic and the Mic 2 models while having a few new features and better battery life. The Mic Mini set includes two wireless transmitters that can be attached to your clothing using the magnetic or clip-on attachment. The design is meant to be not just small and light but also discreet so as to not attract too much attention. You also get windscreens, which can be attached in windy situations. Pairing with the transmitters is...

DJI Mini 4K review: your best first drone
5:08 pm | October 2, 2024

Author: admin | Category: Cameras Computers Drones Gadgets | Tags: , | Comments: Off

DJI Mini 4K: one-minute review

Considering that the DJI Mini 4K is the best budget drone for beginners, it made an understated entrance. There were no bells and whistles, just a quiet appearance on Amazon, and I can see why: it's essentially the same drone as DJI's previous entry-level model, the Mini 2 SE, only with higher-resolution 4K video, which also enables a 2x digital zoom.

Video quality is further bolstered by a higher 100Mbps bitrate, but otherwise this is almost an identical drone to the Mini 2 SE. That's no bad thing – DJI has addressed the former's single weakness – 'just' 2.7K video – and priced its successor aggressively. In one fell swoop, DJI outgunned the growing competition, which includes capable rivals such as the Potensic Atom.

Since the Mini 4K was launched, DJI announced an all-new drone, the DJI Neo, which is even cheaper than the Mini 4K and shoots 4K video. However, the half-size selfie drone is an altogether different proposition. If you want the traditional drone-flying experience, complete with a 3-axis mechanical gimbal and sturdier flight performance including level 5 wind resistance, the Mini series, in which the Mini 4K is the new entry-level model, remains your best bet. If you want even simpler operation, and smart AI-subject tracking features, the Neo is a fun alternative.

DJI Mini 4K beginner drone folded away and in the hand

(Image credit: Future / Tim Coleman)

The Mini 4K offers decent battery life of up to 31 minutes on a single charge, and if you opt for the pricier Fly More Combo bundle you'll get an extra couple of batteries and charging hub thrown in for good measure.

DJI offers perhaps the most rounded experience for beginner pilots, with clear tutorials on the DJI Fly app, through which you control the Mini 4K's flights, complete with a scaled-back selection of DJI Quickshots flight moves, including dynamic movements such as Helix, Circle and Boomerang that will quickly elevate the quality of your aerial videos.

If money is no object, the DJI Mini 4 Pro remains the most accomplished sub-250g choice, with its clever subject tracking and industry-leading flight safety features like omnidirectional object sensing. But if you simply want to see what all the fuss is about with drones without risking a huge amount of money, you can't go wrong with the DJI Mini 4K. It's excellent value, and the most capable sub-$300 / £300 drone on the market, even if the Neo has more flight options.

DJI Mini 4K: release date and price

  • Released April 29 2024
  • Not available from the DJI store in Australia
  • The base kit costs just $299 / £269
  • Fly More Combo bundle costs $449 / £399

The DJI Mini 4K was announced in April 2024, and is aggressively priced at $299 / £269 for the base kit, which made it DJI's cheapest 4K drone until the DJI Neo was launched in September 2024 (though as mentioned the Neo is a different kind of drone). That launch price was 10% cheaper than that of the DJI Mini 2SE, which is practically the same drone as the Mini 4K, although the former only shoots 2.7K video, making the Mini 4K excellent value by comparison.

Should you want the Fly More Combo bundle, which includes an additional two batteries, a charging hub and a shoulder bag, the price jumps up to $449 / £399. The Mini 4K is currently not directly available from DJI in Australia.

  • Price score: 4.5/5

DJI Mini 4K beginner drone in flight with soft-focus foliage in the background

(Image credit: Future / Tim Coleman)

DJI Mini 4K: specs

DJI Mini 4K: design and handling

  • Weighs less than 250g
  • Level 5 wind resistance provides reasonably stable flight
  • Three-axis gimbal for smooth video footage
  • Downward-facing sensors only, no other obstacle avoidance

The DJI Mini 4K is practically a carbon copy of the Mini 2 SE. That means it remains under 250g, and within the regulator-friendly category for most regions (there are no registration or ID requirements for recreational use in the US). Given that it has a camera though, users in the UK will need to register with the CAA for a flyer ID before taking flight.

The Fly More Combo bundle I tested includes replacement propellors and a screwdriver for when you need to swap out old or damaged propellors for new ones, two spare batteries and a charging hub, plus the RC-N1C remote controller. The controller connects to your phone, with a clamp that extends to hold just about any size of phone, plus it comes with USB-C / Lightning cables for a direct connection to your Android phone or older iPhone.

There's a single camera, capable of shooting 12MP photos in JPEG or raw (DNG) format (the latter provides more editing flexibility) and video up to 4K. The camera is supported by a three-axis mechanical gimbal to ensure that your video footage is as smooth as possible.

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DJI Mini 4K beginner drone on a wooden table

(Image credit: Future / Tim Coleman)
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Close up of the DJI Mini 4K beginner drone's arm, on a wooden table

(Image credit: Future / Tim Coleman)
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Close up of the DJI Mini 4K beginner drone's weight markings, on a wooden table

(Image credit: Future / Tim Coleman)
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Closeup of the DJI Mini 4K beginner drone's USB-C and memory card ports

(Image credit: Future / Tim Coleman)

Once you have the DJI's Fly app installed and your phone connected to the controller, it takes little to no time to get airborne: press and hold the take-off button and the Mini 4K will rise to a height of 1.2m, and hover while you get yourself in the zone for flying.

Wind resistance is rated for up to level 5 – that's up to 19-24mph / 29-38kph, which is slightly more robust than the DJI Neo, which is only rated up to level 4. I found the Mini 4K was able to withstand a moderate breeze, although of course you can hear and see it fighting to remain stable in such conditions, and I'd advise against attempting to fly in properly windy conditions.

The Fly app, together with the controller, offer several functions: Return to Home (RTH), QuickShots flight moves, and a variety of camera modes, including photo and video capture (with a button on the controller to switch between the two), panorama, and Timed Shot (interval shooting).

If you're getting started with drones, the Mini 4K has plenty for you to sink your teeth into. One notable omission, though, which you won't find on a drone at this price point, is obstacle avoidance. There are two downward-facing sensors that assist the drone for landing and can detect objects, with a precision range of 0.5-10m, but you're not getting the sophisticated omnidirectional obstacle avoidance of the pricier Mini 4 Pro.

I've been using the Mini 4K with the RC-N1C controller for months, and naturally, without obstacle avoidance crashes are almost inevitable. However, I've found that the Mini 4K has withstood minor collisions with tree branches and so on, and the consequent tumbling to the ground, admirably. It might be plastic, but the Mini 4K can take a few knocks.

You can register for DJI Care Refresh within 48 hours of activating the Mini 4K, which covers you for two replacements, water damage and flyaway, and which is probably a good idea if you tend to be more gung-ho rather than overly cautious. Prices for this start at $59 / £35.

  • Design score: 4.5/5

DJI Min 4K: features and performance

  • Quickshots for easy flight moves
  • Normal, Sport and Cine flight modes
  • Decent battery life of up to 31 minutes
  • Maximum transmission 10km (FCC) / 6km (CE/SRRC/MIC)

DJI lists the Mini 4K's flight time as up to 31 minutes, but that's measured in a controlled setting. What you actually get in real-world use is almost certainly less, and will be influenced by factors including wind speed and the flight maneuvers you're performing, and overall it's better to keep your expectations on the lower side. That said, with typical use in moderate wind I was averaging over 20 minutes, and I'm not sure that you'll find a better battery performance in another drone at this level.

I was also armed with the two additional batteries included in the Fly More Combo, effectively tripling flight times on any given outing, and the charging hub can be topped up on-the-go via USB-C.

The maximum transmission range is up to 10km, depending on what region you're flying in and what level of interference there is where you're flying. Users in Europe, for example, are restricted to 6km. In any case, beginners are unlikely to get anywhere near those kinds of distances on a single flight, and you'll need to make sure that Return to Home is set up for your take-off point in the likely event you get disorientated as to the drone's position.

You can configure the Mini 4K's max possible altitude and flight distances, and the height at which it rises to when Return to Home is initiated. There's a 500m altitude cap, although if you're playing it safe as a beginner you should stick to 150m or lower, which will likely be the legal limit in your region anyway if you don't have a certificate of competency. Again, max distance can be set up to 5000m or the limit removed entirely, but when you're starting out it's probably a good idea to stick to much closer. The Mini 4K is fed all of this data through GPS + GLONASS + Galileo satellite systems.

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DJI Mini 4K's RC controller on a wooden table

(Image credit: Future / Tim Coleman)
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Top of the DJI Mini 4K beginner drone on a wooden table

(Image credit: Future / Tim Coleman)
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Underside of the DJI Mini 4K beginner drone on a wooden table

(Image credit: Future / Tim Coleman)
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DJI Mini 4K beginner drone folded away and in the hand

(Image credit: Future / Tim Coleman)

On the controller you'll find three flight modes: Cine, Normal and Sport, each with a different max speed and responsiveness. Cine mode is the slowest of the three, designed to get you the smoothest possible aerial videos, while of course Sport is the niftiest to unleash piloting fun.

Flight speeds in Sport mode top out at 35.79mph and are no match for FPV drones in manual mode such as the DJI Avata 2, but are plenty quick enough while you find your feet and build your piloting skills. Cine mode is significantly slower than that.

And then there's DJI QuickShots flight moves, which include Dronie, Helix, Rocket, Circle, and Boomerang. Circle performs a lateral 360-degree move around your chosen subject – you simply select suggested subjects or draw a box around the chosen subject, and off the drone goes into action. Boomerang does a similar move while gradually gaining height.

These simple flight moves can improve the quality of your aerial videos as you center on points of interest around you. Other DJI drones have additional QuickShots moves in Spotlight and Follow. The Mini 4K does not offer Follow, and it lacks Follow Me subject tracking, which you get with pricier models and even the new Neo selfie drone.

  • Features score: 4.5/5

DJI Mini 4K: image and video quality

  • 1/2.3-inch sensor
  • Up to 4K 30fps video, 2.7K up to 60fps
  • 12MP JPEG + RAW photos

DJI Mini 4K beginner drone on a wooden table

(Image credit: Future / Tim Coleman)

The Mini 4K's 1/2.3-inch sensor is larger than the sensor found in the Neo, and smaller than the one in the Mini 3 and Mini 4 Pro drones. As such, its 4K video image quality sits somewhere in the middle in terms of color depth, dynamic range and low-light clarity.

That sensor size is roughly equivalent to what you'd find in a standard smartphone, only you don't have the computational photography modes and HDR settings afforded to today's handsets; if the sun is directly in your shot, expect blown-out highlights. However, I still found detail to be very sharp at first light before the sun lapped over the landscape.

Video resolution tops out at 4K 30fps, while cinematic half-speed 60fps videos can be shot in 2.7K and Full HD resolutions. Photos are up to 12MP (in 4:3 aspect, with a 16:9 cropped format also available) and can be shot in either JPEG or raw, with the latter offer more editing flexibility. Files are recorded onto microSD card, with compatibility for cards up to 256GB.

DJI has upped the maximum video bitrate to 100Mbps (it was 40Mbps in the Mini 2 SE). So not only does the Mini 4K offer higher-resolution video than the Mini 2 SE, but its 2.7K video is also less compressed.

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Aerial view of lake at dawn, shot on DJI Mini 4K

(Image credit: Future / Tim Coleman)
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Aerial view of fields at golden hour, shot on DJI Mini 4K

(Image credit: Future / Tim Coleman)

There's a standard color profile for photo and video – what you see is what you get. However, you can easily edit the colors in raw DNG format photos in your choice of photo editor. If you're a keen editor, you'll probably want to shoot photos in both raw and JPEG, just in case the JPEG photos aren't to your taste. However, there's no flat color profile for video, which is pretty normal for a beginner drone, so there's not much scope for color-grading videos.

What's unusual for a drone at this price point is that you can switch from the Mini 4K's Auto setting to a Pro mode for manual control over exposure settings for photo and video, including the 1/30 to 1/8000 shutter speed and ISO 100 to 3200 ranges. That's an excellent feature for discerning image makers, though I suspect most people will keep the Mini 4K in Auto and be pleased with the results.

The three-axis gimbal offer a -110° to 35° tilt range, -35° to 35° of roll and -20° to 20° pan, and works in tandem with image stabilization to give you smooth video footage. Unless you're fighting high winds or making jerky movements on the controller – which requires significant finesse – then you can expect super-smooth video footage, especially in Cine mode.

  • Image quality score: 4.5/5

DJI Mini 4K sample video 4K

DJI Mini 4K Quickshots

DJI Mini 4K: testing scorecard

DJI Mini 4K beginner drone in flight with soft focus tree foliage in the background

(Image credit: Future / Tim Coleman)

Should I buy the DJI Mini 4K?

Buy it if...

You want the best 4K drone under $300
Putting the DJI Neo aside, which is a different proposition, the Mini 4K is the best drone money can buy for under $300.

You’re buying your first drone
The Mini 4K is a superb first drone, with decent flight performance and video quality, plus manual control over camera settings.

You want decent battery life
Up to 31 minutes from a fully charged battery is very impressive, and you'll get triple that with the Fly More Combo kit.

Don't buy it if...

You want the very best sub-250g drone no matter the cost
If money is no object, your best first drone is the DJI Mini 4 Pro.

You're more interested in aerial selfies than flying
DJI's Neo is smaller, cheaper and even easier to use, with intelligent subject tracking making selfies on the move an autonomous doddle.

You'd be better off with obstacle avoidance
The Mini 4K only has downward-facing sensors primarily designed to aid landing, whereas the Mini 4 Pro has omnidirectional obstacle avoidance that'll help you avoid crashes.

DJI Mini 4K: also consider

How I tested the DJI Mini 4K

Close up of the DJI Mini 4K beginner drone's arm, on a wooden table

(Image credit: Future / Tim Coleman)
  • Long term use
  • Flown with the DJI RC-N1C Controller and Fly app
  • Videos and photos made with all available file formats

I've had the DJI Mini 4K for months, and during this time have become very familiar with it. The Fly More Combo was bundled with the charging hub, two extra batteries and the DJI RC-N1C controller, through which I have controlled the drone, via the DJI Fly app for Android.

The tiny drone has been flown in all kinds of weather, even inclement, showing it's able to withstand light rain and reasonably brisk wind. It's taken a few knocks into tree branches and has so far withstood this rough treatment.

I've made photos and videos with all of the available settings, which includes 4K, 2.7K, Full HD videos, plus 12MP JPEG and RAW photos, in good light and low light at dusk.

First reviewed September 2024

Holy Stone HS900 review: should DJI be looking over its shoulder?
12:00 pm | May 19, 2024

Author: admin | Category: Cameras Computers Drones Gadgets | Tags: , , | Comments: Off

Holy Stone HS900: one-minute review

I’ve reviewed almost every Holy Stone drone available and its latest model, the Holy Stone HS900, represents a significant improvement across the board which makes it the Chinese drone manufacturer’s best drone to date. So much so, that what’s on offer competes directly with the DJI Mini 3 and the Potensic Atom – two impressive mid-range sub-250g drones that come in at two price points.

In terms of price, the HS900 single battery kit costs $330 making it marginally more expensive than the Potensic Atom and significantly less expensive than the DJI Mini 3. Is it better than the Mini 3? No, but if you’re on a budget, it offers an enticing alternative to the Potensic Atom and also provides additional features that could be a deciding factor on which drone to choose, and firmly cements it as one of the best beginner drones available.

Holy Stone HS900 specs

Camera: Sony 1/2.3 in 48MP CMOS sensor / fixed focus f/2.6 lens
Video resolution: Up to 4K
Frame rates: 4K 30 fps / 1080p up to 60 fpsVideo transmission range: 1.86 miles / 3 kmFlight modes: Stable, Normal, Sport
Battery: 2250 mAh Li-ion / up to 30 minutes
Charger type: USB-C cable
Weight: 8.7oz / 249g
Dimensions: 5.63x3.26x2.44in / 143×82.8×62mm folded / 6.59x 8.57x2.44in / 167.4x217.8x62mm unfolded

We’ll go into much more detail later, but some of the features and functionality you can enjoy with the HS900 include a camera with a Sony 1/2.3 in 48MP CMOS sensor and a fixed focus f/2.6 lens, up to 4K 30fps video, subject tracking, time-lapse capture, cruise control, automated flight patterns and much more. Image quality is also very good, not perfect, but the minor issues here could be resolved with a future firmware update.

All-in-all, the HS900 slips into a burgeoning sub-250g drone category which is fiercely competitive, where less expensive options are now hacking at the heels of the DJI. It’s unlikely that they’ll succeed in catching up or overtaking the market leader – although DJI is facing a potential ban in the US – but with the trickle-down of features and improvements in flight performance and image quality with budget drones, it’s pilots who are ultimately benefitting from greater choice.

Holy Stone HS900: Release date and price

  • Released May 2024
  • Only available in the US at launch
  • Available in other regions soon

At launch in May 2024, the Holy Stone HS900 was initially only available in the US. The drone will become available in the UK and other regions shortly. At the time of writing, US residents can purchase the HS900 single battery kit from Amazon for $369.99 after applying a $100 voucher, although the price regularly fluctuates. For UK-based and Australian pilots, this converts to £280 / AU$550 respectively, but official pricing for these regions is yet to be announced so this price could vary.

The single-battery HS900 kit includes the HS900 drone, a controller, one smart battery, phone connection cables, a USB-C charging cable, a set of spare propellers, spare screws, a screwdriver and a carry bag. 

Dual and triple battery kits are suggested on the Holy Stone website, so we could see additional battery kits becoming available in the future. We have been told that a battery charging hub is also due to be released, allowing multiple batteries to be charged at once rather than one at a time in the drone via USB-C.

We'll update this page with any price and availability updates. 

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Holy Stone Sirius HS900 unfolded viewed from above

(Image credit: James Abbott)
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Holy Stone Sirius HS900 folded showing the top of the airframe

(Image credit: James Abbott)
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Holy Stone Sirius HS900 folded showing the bottom of the airframe

(Image credit: James Abbott)
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Holy Stone Sirius HS900 battery being slotted into the battery bay

(Image credit: James Abbott)
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Holy Stone Sirius HS900 battery

(Image credit: James Abbott)
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Holy Stone Sirius HS900 carry case

(Image credit: James Abbott)

Holy Stone HS900: Design and controller

  • Lightweight folding design
  • New controller
  • Great build quality

Most drones these days feature a folding design to reduce size for transportation and storage, and the HS900 is no exception in this regard. It’s a tried, tested and ultimately successful approach to drone design, so it makes perfect sense in every way. The dark gray drone is just 5.63x3.26x2.44in / 143×82.8×62mm when folded, with an unfolded size of 6.59x8.57x2.44in / 167.4x217.8x62mm and a weight of 8.7oz / 249g. So, all pretty standard for a drone of this type.

Build quality is very good, and there’s nothing to indicate the relatively low cost of the HS900. In fact, it looks more expensive than it actually is, even if looks don't ultimately impact performance. The drone is made of lightweight plastic so it doesn’t feel substantial in the hand, but to be fair this is the case with even the most expensive sub-250g models – it’s just a way of keeping weight down. Durability certainly isn’t an issue.

Flight times are respectable, averaging around 22 minutes in moderate to gusty wind before Return to Home was initiated at 20% battery, as opposed to the advertised flight times of up to 30 minutes. However in reality, with lower winds and warmer temperatures, flight times would likely increase. The 2250mAh battery takes just over an hour to charge in the drone via USB-C, which is quite fast, and you can also charge batteries this way using a USB power bank when out in the field.

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Holy Stone Sirius HS900 P2 controller

(Image credit: James Abbott)
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Holy Stone Sirius HS900 P2 controller with smartphone attached

(Image credit: James Abbott)
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Holy Stone Sirius HS900 P2 controller stick storage

(Image credit: James Abbott)

The HS900 uses a new P2 controller which sports a simple yet functional design with all of the direct access controls you need to control the drone, the camera and the gimbal. This includes a small joystick for adjusting specific camera settings and a dual-function Fn button that can be customized with two different functions.

For the review, I set the button to tilt the gimbal between 0-degrees and 90-degrees with a single press, and to initiate Cruise Control with a double press. The build quality of the controller can’t be faulted, and although the bottom-mounted folding phone holder arms have a slightly flimsy feel to them, they securely accommodate smartphones of all sizes, so no worries here.

Holy Stone HS900: Features and flight

  • Smooth flight controls
  • Includes subject tracking
  • Multiple flight modes

Holy Stone drones have always been pretty good flyers, but they have also lacked the finesse of more expensive drones. With the HS900, this has all changed and the flight performance on offer is greatly improved and puts the drone comfortably among its rivals. Flight controls are also smooth and responsive, so it’s possible to perform positive maneuvers when capturing video.

What’s more, the gimbal tilt, which has a range of 30 to -90-degrees, allows you to shoot upwards slightly as well as straight down, and has a smooth so you can confidently incorporate it into maneuvers for more dynamic video shots. Image stabilization is highly effective, using a combination of the 3-axis mechanical gimbal and Electronic Image Stabilization to produce shake-free video footage.

With GPS positioning, provided by GPS, GLONASS, Galileo and BeiDou systems, hovering is generally stable with drift mostly noticeable at higher altitudes. With GPS, pilots can also take advantage of Return to Home functionality which can be initiated manually by the pilot, or automatically when the battery reaches 20% charge / when the connection between the drone and controller is lost. It can also be cancelled when the battery reaches 20% if you want to increase flight time slightly.

Despite being a small and lightweight drone, the HS900 offers level 5 wind resistance, which equates to wind speeds up to 24 mph. The HS900 was flown in wind gusts of 22mph during testing and showed no signs of struggling in any of the three main flight modes/speeds, so this claim appears to be correct. The flight modes include Stable with a top speed of 11mph, Normal with a top speed of 22mph and Sport which offers the maximum flight speed of 31mph.

Being a mid-range sub-250g drone, like its direct competitors, the HS900 doesn’t offer obstacle avoidance, so you do have to take care when flying close to obstacles and when using automated flight patterns. It does, however, have a downward vision system that’s used to determine the ground in situations when a GPS signal is unavailable, such as when flying indoors.

Holy Stone HS900 Time-lapse

The automated flight patterns on offer include Point of Interest, Spiral up, Tap Fly (waypoints), Gesture Selfie, One-key Ascension and Catapult, which work as intended. Plus, there’s subject tracking where you draw a box around the subject to be followed and the drone will do just that. This works well for the most part, but there are times when the HS900 loses the subject so it’s not perfect.

A fun and easy to use feature is Time-lapse, with manual control over the interval and video length, plus exposure and shutter speed to maintain consistency in your videos. Unlike DJI's Time-lapse feature, the HS900's version works independently from flight and you simply hover instead. If you wish to create a moving sequence, also known as a hyper-lapse, you have to judge flight distance and speed yourself, which is extremely tricky. It’s much easier to simply select a composition and shoot with the drone in a hover.

Cruise Control is another useful feature and one that, as the name suggests, allows you to set the drone on a course and maintain it without having to hold the control sticks. This provides greater consistency for videos thanks to a consistent speed. I did try to use Cruise Control when shooting a Time-lapse, but each time it adjusted the gimbal tilt making it unusable in this situation, unfortunately.

Holy Stone HS900: image quality

  • Sony 1/2.3 in CMOS sensor
  • Up to 48MP photos
  • 4K 30 fps & 1080p 60 fps video

Holy Stone Sirius HS900 close-up of the camera and gimbal

(Image credit: James Abbott)

Once again, like overall performance, the image quality produced by the HS900 beats all other Holy Stone drones hands down. The camera features a Sony 1/2.3-inch 48MP CMOS sensor with a fixed focus f/2.6 lens providing a 100-degree field of view, and sharp video and photo quality. 

Fixed focus may sound like a step down from autofocus, which it is in a way, but it uses the principle of hyperfocal distance to provide the maximum depth-of-field possible for the combination of focal length and aperture – meaning much of the scene will be in sharp focus.

Overall image quality is very good for both photos and videos, which can be captured with the camera set to auto or manual exposure. Image quality is best in brighter conditions, like all drones with a small image sensor, but white balance is a little quirky and could benefit from adjustments in a future firmware update. The white balance presets are a little off what you would expect, with Auto providing the best, yet not always perfect results.

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Photo of a pier taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a coastal town taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a beach and groyne from above taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a circus from above taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a cirus tent in a field taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a bridge from above taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of an industrial area taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a town taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)
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Photo of a water treatment facility taken with the Holy Stone Sirius HS900

(Image credit: James Abbott)

Photos can be captured in 4K resolution  (3840x2160 pixels) and 48MP with image dimensions of 8192x4608 pixels – these are in 16:9 format rather than the more common 4:3 format used for drone photos. 

Photo capture is currently only available in JPEG format, but raw capture will be added in a future firmware update. Video can be captured in 4K at 30 fps and 1080p at 60 fps in a Normal/Standard color profile for straight-out-of-camera use, and is saved in MP4 format. A flat color profile for increased dynamic range and color grading is, unsurprisingly, unavailable.

My short wish list for a firmware update would be to build on the well-featured camera control by including a histogram and Automatic Exposure Bracketing (AEB). The former is invaluable for assessing exposure, while the latter makes shooting in high-contrast situations, such as around sunrise and sunset, much easier because you can capture bracketed exposures for HDR photography.

Holy Stone HS900 video in 4K / 30 fps

Should I buy the Holy Stone HS900?

Holy Stone Sirius HS900 unfolded on concrete

(Image credit: James Abbott)

Buy it if...

Don't buy it if...

How I tested the Holy Stone HS900

  • Several days and flights
  • Used in mixed weather, including moderate wind
  • Various flight modes and video and photo settings

The Holy Stone HS900 was tested over several days of flying in a range of locations, environments and weather conditions (excluding rain) to test flight performance, flight features, overall handling and image quality for both photo and video capture. All testing is conducted in a way that meets local aviation laws and restrictions to ensure that all flights are safe and legal.

Drones are always tested using manual flight patterns for video that are typical of professional aerial video capture to shoot visually interesting footage. This also provides the opportunity to test aspects such as the connection between the drone and controller, latency between the two and the accuracy of the controls and flight in general.

With nearly 30 years of photographic experience and 15 years working as a photography journalist, I’ve been covering drones in terms of shooting and editing techniques, alongside writing drone reviews for a number of years. As well as flying most consumer and prosumer models, I’ve previously held a PfCO (Permission for Commercial Operations) issued by the Civil Aviation Authority in the UK, and now fly under an A2 CofC (A2 Certificate of Competency).

First reviewed May 2024

DJI launches Osmo Action 4 camera with larger sensor and better stabilization
3:19 pm | August 3, 2023

Author: admin | Category: Mobile phones news | Tags: | Comments: Off

Less than a year after the DJI Osmo Action 3 was unveiled comes version 4. This action camera promises improved performance in low light, better stabilization options and more durability. The DJI Osmo Action 4 arrives with a significantly larger sensor – 1/1.3”, up from 1/1.7” on version 3. This increases the pixel size from 1.6µm to 2.4µm. The lens is the same as before, 155° FoV and an f/2.8 aperture. Like its predecessor, the Action 4 can record 4K video at 120fps and up to 130Mbps. To get the best quality out of it, you can shoot in 10-bit D-Log M format. The camera supports...

DJI Air 3 review: a nifty dual-camera drone
4:00 pm | July 25, 2023

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Two-minute review

Thanks to its dual cameras the DJI Air 3 has the potential to open up new creative avenues, making it an exciting drone to play with. While the 3x zoom may not be obviously useful at first – after all why not just fly closer? – what it offers is the ability to shoot or film what a drone this size can’t get close to, such as people and crowds. It could therefore be useful to event photographers as a way to shoot safely and  legally. I can see it being a useful for landscape photographers, too – perhaps even to shoot active volcanos without your drone being turned into a lump of melted plastic.

Both cameras shoot 12MP or 48MP JPEG and/or raw files on two 1/1.3-inch CMOS sensors, the same sensor used on the DJI Mini 3 Pro. Video is up to 100fps at 4K with the ability to shoot 2.7K at 60fps in vertical mode, a feature that's very useful if you share videos on social media. Video can be recorded with both cameras offering 10-bit D-Log M and 10-bit HLG color modes; 10-bit D-Log M mode offers more flexibility in post production with respect to detail available in highlights and shadows, as well as color grading.

DJI Air 3 drone on a tree stump with arms and propellors in flight position

(Image credit: Future)

The 24mm equivalent lens has a fixed aperture of f/1.7, while the 70mm equivalent is an f/2.8 lens. 

The DJI Air 3 also offers excellent flight and safety features which never fail to impress – it makes total sense for DJI to focus on drone safety if it's to continue existing in a world of increasingly tough, varied and inconsistent drone regulations. Safety features include Omnidirectional Obstacle Sensing, APAS 5.0 anti-collision, and Advanced Return to Home, all of which, when enabled, combine to make it pretty difficult to crash.

Deciding if this is the right drone for you ultimately boils down to your needs as a pilot and as a photographer/filmmaker. The Air 3 is positioned between the more affordable and feature-packed Mini 3 Pro, and the much more expensive but highly capable C2-category Mavic 3 Pro. Although the Air 3 is missing the 'Pro' moniker, its size, features and dual cameras provide a good middle ground for those struggling to make a decision. It's a perfectly suitable drone for beginners wanting to push their creative potential, while equally appealing to more professional pilots on a budget.

The DJI Air 3 is also a more versatile offering than the DJI Air 2S and a shoo-in for our best drones guide. 

DJI Air 3: release date and price

  • Available from July 25 2023
  • Starts at $1,099 / £962 / AU$1,699
  • Two controller options

The much anticipated DJI Air 3 was available immediately after being announced on July 25 2023. Positioned between the Mini 3 Pro and Mavic 3 Pro, it's available either as a standard package (drone and remote) or as the Fly More Combo with additional batteries, a bag, and other accessories. There's a choice of two controllers: the DJI RC-N2 (which replaces the DJI RC-N1) and the DJI RC 2, an upgrade from the DJI RC that sports two antennas to improve its range and performance.

Price-wise, the Air 3 drone with the RC-N2 remote and a battery will cost $1,099 / £962 / AU$1,699. That's an increase over the Air 2S, which was priced at $999 / £899 / AU$1,549 with battery and remote when it launched in 2021, but arguably a modest one given that you’re getting lots more features and upgraded remote.

Kit options include the Air 3 with the DJI RC-N2 for $1,099 / £962 / $1,099, the DJI RC-N2 Fly More Combo for $1,349 / £1,199 / AU$2,049, and the DJI RC 2 Fly More Bundle for $1,549 / £1,379 / AU$ 2,349. The DJI RC 2 will retail for $369 / £323 / AU$549 and a single additional battery will cost $159 / £129 / AU$359. Fly More combos come with two additional batteries, a carry bag, a charging hub and other useful accessories, and offer value if you see yourself requiring extra batteries anyway.

DJI Air 3: Design and controller

  • In line with recent foldable DJI designs
  • Imposing dual camera
  • 720g – European C1 rating

The Air 3 sports a look very much in line with other foldable DJI products, in particular previous Mavics with their folding arms. What makes it stand out is its dual camera, which is large in size and protrudes from the main body. Without propellers the drone measures folded: 207 x 100.5 x 91.1mm and unfolded: 258.8 x 326 x 105.8mm.

Weighing 720g, in the UK the DJI Air 3 is classed as a C1 category drone (up to 900g), meaning it's considered a lower risk to third parties than drones like its heavier brother, the Mavic 3 Pro. This classification allows for more freedom in how and where you can fly; refer to the CAA website and our own UK drone laws explainer for more information on drone laws.

The Air 3 uses a 4,241mAh battery which is responsible for a third of the drone’s weight at 267g. It takes 60 minutes to charge, and provides a very generous 46 minutes of advertised flight time, 48% more than its predecessor, the DJI Air 2S. During my testing that figure has proven to be fairly accurate, provided you're cruising slowly on a windless day. A more 'sporty' flight or windy day will increase battery use, therefore shortening your flights. You might ask who, at this point,  needs more than that sort of flight time, although with longer batteries come new applications.

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DJI Air 3 drone on a tree stump packed away in carry case with remote controller

(Image credit: Future)
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DJI Air 3 drone on a tree stump with arms and propellors folded away

(Image credit: Future)
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DJI Air 3 drone on a tree stump with arms and propellors folded away and seen directly from above

(Image credit: Future)
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DJI Air 3 drone on a tree stump arms folded away

(Image credit: Future)
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DJI Air 3 drone on a tree stump with arms and propellors folded away

(Image credit: Future)
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DJI Air 3 drone on a tree stump with closeup of its dual cameras

(Image credit: Future)
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DJI Air 3 drone on a tree stump with arms and propellors in flight position

(Image credit: Future)
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DJI Air 3 drone remote controller with built-in screen, on a tree stump

(Image credit: Future)

The two controllers available are the DJI RC 2 and DJI RC-N2, both upgrades of their respective predecessors, the DJI RC and the DJI RC-N1.  

The DJI RC 2 is a particularly welcome upgrade for anyone who's used the DJI RC, specifically in terms of range and signal. The DJI RC 2 features external antennas, which vastly improves the poor signal range DJI RC users have reported across many online drone forums. I flew the Air 3 with the DJI RC 2 in thick woodland with far better signal and range than I’d normally experience with the DJI RC.

DJI Air 3: Features and flight

  • Omnidirectional collision avoidance
  • ActiveTrack 5.0 subject tracking
  • Advanced Return to Home

If you're used to DJI drones, you'll be instantly at home with the DJI Air 3. It flies very well straight out of the box, and if you're concerned about drawing unwanted attention, while it's understandably noisier than the Mini 3 Pro due to its size, the Air 3 does not produce unreasonable noise levels. As usual, to the untrained ear it may sound like a swarm of bees, but it's in no way screeching, as perhaps the DJI FPV is.

As with previous DJI drones, three flight modes are available: Sport mode provides a top speed of 42.5mph with collision avoidance switched off, which is useful if you're chasing a fast-moving subject; Normal mode is slower, with collision avoidance on, while Cine mode provides the slowest flight speed with reduced control sensitivity, for more precise maneuvering and capturing less hectic and more cinematic footage. 

The Air 3's wind-speed resistance is impressive. It's advertised at just under 27mph, and I've flown it in 35mph winds and captured stable footage, although I did get a warning telling me that due to high wind speeds Return to Home may not function as expected. This is possibly its greatest advantage over a cheaper sub-250g drone such as the Mini 3 Pro, which itself offers impressive wind resistance for such a small drone.

As is now the case with all DJI drones, GPS positioning linked to nearly two dozen satellites enables precise hovering. Omnidirectional Obstacle Sensing (a first in the Air series) combined with DJI’s Advanced Pilot Assistance System (APAS) 5.0 makes flying in tricky environments worry-free. With collision avoidance turned on, the Air 3 can either brake or bypass obstacles when they’re detected. The bypass setting offers a 'Nifty' option designed to provide smoother flight when obstacles are detected in more complex environments; however the downside of this smoother setting is a greater risk of collision.

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Close up of DJI Air 3 drone arm with model name

(Image credit: Future)
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DJI Air 3 drone on a tree stump next to battery charger pack

(Image credit: Future)
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DJI Air 3 drone on a tree stump view of the back

(Image credit: Future)

I tested the Air 3 in thick woodland, and made my way through branches and treetops without collision, greatly helped by the large screen on the RC 2 remote offering a much clearer image than a smartphone.

For extra safety the Air 3’s Advanced Return to Home scans up to 200m to calculate the safest route to its take-off point, while AirSense ADS-B provides notifications of nearby planes and helicopters. The Air 3 uses the next-generation DJI 04 transmission system, which can transmit a 1080p/60fps live feed at a distance up to 20km (in the US, up to 10km in other regions including Europe). For European users a 5.1Ghz frequency band has been added to improve transmission performance; does this hint at the release later this year of an O4 Air Unit for FPV quadcopters to replace the current O3 Air Unit? 

Flight features include Focus Track for both cameras, which keeps the subject at the centre of the frame, Quickshots (a set of creative camera movements), while video modes include 2.7K vertical shooting convenient for social media, Mastershots (generates fast effortless cinematic footage), Night Mode for low-light environments, Hyperlapse (4K horizontal / 2.7K vertical), Slow Motion up to 100fps at 4K, Smartphoto 3.0, QuickTransfer, Lightcut (one-tap video editing), and Waypoint Flights, available on the Air series for the first time.

DJI Air 3: Image and video quality

  • Dual camera (wide-angle and medium tele)
  • Two 1/1.3-inch CMOS sensors
  • Up to 4K 100fps video

The DJI Air 3 sports two cameras, each based on a 1/1.3-inch CMOS sensor. One is a wide-angle 24mm equivalent, and the other is a medium-telephoto 70mm equivalent, essentially offering 3x zoom. To some this may seem of little use; after all, why would you need a zoom lens if you can simply fly the drone closer to the subject? This is a valid question for which there are a couple of simple answers.

First of all, it gives you the ability to shoot events where crowds gather. It's illegal to fly over crowds (defined as a group of people unable to disperse quickly in case of an accident), and therefore a zoom lens could offer the ability to capture events (festivals, weddings, and so on) without having to get too close, and without posing a risk. Another benefit is when you need to capture anything at sea, perhaps a yacht, the zoom lens allows you to stay a little higher above the waves and still get the close-up footage you need.

A zoom lens also offers the potential to compress the perspective of a scene by bringing elements at different distances closer together, opening up new creative possibilities.

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DJI Air 3 photo of a field  on a sunny day with the 24mm wide camera

(Image credit: Future)
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DJI Air 3 photo of a field  on a sunny day with the 70mm telephoto camera

(Image credit: Future)
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DJI Air 3 aerial photo of rural farmland on a sunny day with the 24mm wide camera

(Image credit: Future)
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DJI Air 3 aerial photo of rural farmland on a sunny day with the 70mm telephoto camera

(Image credit: Future)
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DJI Air 3 aerial photo of a rural home on a sunny day with the 24mm wide camera

(Image credit: Future)
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DJI Air 3 aerial photo of a rural home on a sunny day with the 70mm telephoto camera

(Image credit: Future)
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DJI Air 3 aerial photo of village houses on a sunny day with the 24mm wide camera

(Image credit: Future)
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DJI Air 3 aerial photo of village houses on a sunny day with the 70mm telephoto camera

(Image credit: Future)
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DJI Air 3 photo of a large garden and allotment  on a sunny day with the 24mm wide camera

(Image credit: Future)
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DJI Air 3 photo of a large garden and allotment  on a sunny day with the 70mm telephoto camera

(Image credit: Future)

I really like the ability to tilt the camera from 90 degrees downwards to 60 degrees upwards; it's another great tool for capturing footage that stands out, and a feature that Mini 3 Pro users will be familiar with.

One important consideration is that both lenses have a fixed aperture: f/1.7 in the case of the wide-angle, and f/2.8 for the medium telephoto. If you only take photos, it’ll be just fine; but if your focus is videography, because you have no option to adjust your aperture you'll need to be prepared to change ND filters as often as the light changes, and landing more often than necessary can very quickly become annoying, and negates the usefulness of a 46-minute battery life.

As an example, I often shoot videos at sunrise. With a fixed aperture, the fast-increasing light levels mean I take off with no ND filter, then five minutes later as the sun rises I have to land to add an ND8, then another 10 minutes later I have to change to ND16.

The sensors are the same as on the Mini 3 Pro, so expect similarly good image quality. Both cameras capture 12MP or 48MP photos in raw and/or JPEG, and offer all the standard photography modes, including Single Shot, Burst Shooting, AEB and Timed. In terms of video both cameras can capture video in 4K up to 100fps, FHD up to 200fps, 2.7K vertical up to 60fps and FHD vertical up to 60fps.

Should I buy the DJI Air 3?

DJI Air 3 drone on a tree stump with closeup of its dual cameras

(Image credit: Future)

Buy it if...

Don't buy it if...

How I tested the DJI Mavic 3 Pro

I tested the DJI AIR 3 over the course of a couple of weeks. It was very windy with up to 35mph winds, except for one calmer day. This allowed me to test its performance with high wind both in terms of flying and the stills and video I was able to capture in these less than ideal conditions.

I flew it with and without obstacle avoidance, in a multitude of environments, from open fields to thick woodland. Wooded areas are a great environment in which to test a drone and its remote. How does the drone perform sensing and avoiding those trees? How good is the camera’s dynamic range; i.e. how does it deal with the contrast between dark shaded areas and bright light-wells, and how well does it perform in these sometimes low-light conditions. And how well does the signal penetrate through thick vegetation?

DJI Air 3 drone on a tree stump with closeup of its dual cameras

(Image credit: Future)

I tend to fly drones manually, with minimal assistance from either collision sensors or automatic flight features. This allows me to test their responsiveness and overall latency drops between the drone and the remote, depending on the surroundings.

All testing is carried out on private property, away from people and buildings, and in accordance with local aviation laws and restrictions to ensure that all flights are safe and legal.

I've been flying camera drones since 2014, and in the past year I've been flying FPV quadcopters, which has been both exciting and very challenging. I fly a multitude of different drones, from tinywhoops to carbon fiber freestyle drones and camera drones, for the variety of creative avenues they offer. I fly four different leading brands of drones, and have no affiliation to any of them.

First reviewed July 2023