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DJI Air 2S video crop at high fps?
954 17 4-21 01:47
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e1darie1
lvl.4
Flight distance : 1772208 ft
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United Arab Emirates
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Hi,

When I’m switching to high fps in video mode frame zooming in! Does it mean it’s cropping and not using full sensor when shooting 50/60 fps?
4-21 01:47
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DAFlys
Captain
Flight distance : 1300102 ft
United Kingdom
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Yes its cropping - potato jet covered it in his review -
4-21 23:53
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the_p1gg0d
lvl.2

Italy
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My god the 2x crop is a crap... on the Air 2 it doesn't happen.

DJI we need an explanation or better a firmware update
4-22 03:54
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Gerv55
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Flight distance : 2004911 ft
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Another negative for the 2s, how does a smaller sensor not have this issue?
4-22 07:13
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DJI Gamora
Super Moderator

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Hi, e1darie1. Thanks for reaching out and posting your concern. Please be advised that increasing the fps will require the camera to process more data in the same amount of time. Based on the processing power of the DJI Air 2S camera, in order to maintain the 4K image quality, we have adopted the method of reducing the FOV to reduce the data processing volume of the camera.
4-24 03:44
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b9y
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Flight distance : 154659 ft
United Kingdom
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DJI Gamora Posted at 4-24 03:44
Hi, e1darie1. Thanks for reaching out and posting your concern. Please be advised that increasing the fps will require the camera to process more data in the same amount of time. Based on the processing power of the DJI Air 2S camera, in order to maintain the 4K image quality, we have adopted the method of reducing the FOV to reduce the data processing volume of the camera.

Yea but WHY could the Air 2 do it?
5-28 13:00
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Chuck Campfield
Second Officer
Flight distance : 356552 ft
United States
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This issue was discussed here with examples of the FOV reduction at higher frame rates: https://forum.dji.com/forum.php?mod=viewthread&tid=242119
5-28 13:51
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djiuser_u0d79QVlX1Za
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Italy
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This issue is very disappointing. The strength of the 2s is the 1inch sensor, but in any recording format over 30fps we will be using about 2/3 of that sensor AND the focal length jump from 22mm to around 31mm. This is something that should be written clearly on the Tech Specs of the drone otherwise it creates misleading expectations in the customer (especially when the main selling point is the 1inch sensor). It's really odd that if we want to shoot with a focal length of 24mm at 60fps we have no other option than to buy the previous model (air 2). Please DJI do something to solve the issue, at least to give us an option to film wide angle 60fps! pleaseeee
6-28 12:53
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Captain Dangerous
lvl.4
Flight distance : 251762 ft
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b9y Posted at 5-28 13:00
Yea but WHY could the Air 2 do it?

Because the air 2 has a slower bit rate, less over all quality.  
6-28 13:02
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videoeditman
First Officer
Flight distance : 3795915 ft
United States
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Maybe an option to record full sensor, lower bit rate?
6-28 17:48
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djiuser_u0d79QVlX1Za
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Italy
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videoeditman Posted at 6-28 17:48
Maybe an option to record full sensor, lower bit rate?

That would be lovely. Hopefully, DJI will give us feedback about your idea...
6-29 02:00
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Captain Dangerous
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djiuser_u0d79QVlX1Za Posted at 6-29 02:00
That would be lovely. Hopefully, DJI will give us feedback about your idea...

No chance, DJI will use all our suggestions for the next version of the drone and charge us all to upgrade!!!
6-30 02:00
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miniDrone360
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Gerv55 Posted at 4-22 07:13
Another negative for the 2s, how does a smaller sensor not have this issue?

Maybe it depends on Processor in Air 2s that cant process more pixels at the time...
6-30 13:25
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fanse387eb1b
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Andorra
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djiuser_u0d79QVlX1Za Posted at 6-28 12:53
This issue is very disappointing. The strength of the 2s is the 1inch sensor, but in any recording format over 30fps we will be using about 2/3 of that sensor AND the focal length jump from 22mm to around 31mm. This is something that should be written clearly on the Tech Specs of the drone otherwise it creates misleading expectations in the customer (especially when the main selling point is the 1inch sensor). It's really odd that if we want to shoot with a focal length of 24mm at 60fps we have no other option than to buy the previous model (air 2). Please DJI do something to solve the issue, at least to give us an option to film wide angle 60fps! pleaseeee

Pues que es engañoso!! Me he dado cuenta en medio de un trabajo! Y encima tengo el air 2 y no me lo había cargado en la mochila!
7-24 13:44
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FriedChicken_II
lvl.4
Flight distance : 368110 ft

Hong Kong
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Gerv55 Posted at 4-22 07:13
Another negative for the 2s, how does a smaller sensor not have this issue?

its not happening because its a smaller sensor. the larger the sensor is, the more powerful readout circuits it needs. a smaller sensor with merely 12mp(48mp physically but reads out in 12mp) dont needs to be cropped to read 4k60fps. While your 20mp sensor do needs to be cropped to avoid line skipping smapling.

Trust me you dont want line skipping sampling. The super sampling on Air2s comes with cropping but the image quality is so much better and you wont see those annoying aliasing duw to line skipping sampling.
7-24 17:27
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FriedChicken_II
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Flight distance : 368110 ft

Hong Kong
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djiuser_u0d79QVlX1Za Posted at 6-28 12:53
This issue is very disappointing. The strength of the 2s is the 1inch sensor, but in any recording format over 30fps we will be using about 2/3 of that sensor AND the focal length jump from 22mm to around 31mm. This is something that should be written clearly on the Tech Specs of the drone otherwise it creates misleading expectations in the customer (especially when the main selling point is the 1inch sensor). It's really odd that if we want to shoot with a focal length of 24mm at 60fps we have no other option than to buy the previous model (air 2). Please DJI do something to solve the issue, at least to give us an option to film wide angle 60fps! pleaseeee

if you want wide and 60fps, get an anamorphic adapter or wide angle adapter for your air 2s.

you must trade quality for fov, its always like this. with the cropped 4k60 you wouldnt see any aliasing due to the super sampling, which is amazing. otherwise if you want uncropped 4k60 then it means that the sensor would read out 1200 mega pixels per second or 1.2 billion pixels per second. and thats a bit too much for your tiny drone.

so if you want uncropped 4k60 you lose super sampling and maybe jump right into line skipping sampling, which is really bad for any serious video work. IMO its even worse than interpolation in post.

my 25k usd sony a7r4 dont even shoots in 4k60 even in cropped mode lol
7-24 17:36
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FriedChicken_II
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Flight distance : 368110 ft

Hong Kong
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b9y Posted at 5-28 13:00
Yea but WHY could the Air 2 do it?

air 2 is only 8 bit per channel while air 2s is 10 bits per channel. so its 24bits vs 30bits. for each pixel the data amount is 1/4 larger.

air 2 only reads 12mega pixels in video mode while air 2s has 20mp on chip. even if jt has a crop factor of 1.4, you still get 8mp full res 4k.
7-24 17:59
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FriedChicken_II
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Flight distance : 368110 ft

United States
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To compare the Air 2S to Air 2 in 4k 60 mode is not fair imo.

The 4K 60FPS mode on Air 2 uses about 0.7x of its sensor size, which is merely a 1/2-inch sensor. That means an area of merely 0.175x size of the sensor area on Air 2S.

Meanwhile the 4K 60FPS mode on Air 2s uses 0.5x of its sensor size. Which means a 2.857x pixel size increase. So, a lot less noise.

Meanwhile, the 4K 60FPS mode on Air 2S reads out at 10bits per channel, and the Air 2 only reads out at 8 bits per channel.

Basically you sacrificed the fov to get a much, much better image quality.  And honestly speaking I hardly find any situation that 60fps is a must and you can't fly a little bit further away to keep the subject in frame..
7-24 18:36
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