Minin4 pro optimum zoom

[jojonono]

We have a small sboot tomorrow for the fireworks and we decided to shoot strictly in NIGHT MODE for the client,

First question, is the image going g to be cropped in since it's 4k 60fps ??

Second question, can I zoom in further in 4k 60fps in NIGHT MODE ?? (if 60fps exists in that mode) how far can I zoom in without losing quality in the above??

For example: in my air 2s I can zoom in lossless up to 3x, anything above that makes the video quality deteriorate...

Hope someone can advise urgently... thanks,

 

[Droning on and on...]

@jojonono, how do you figure you can get 3x lossless zoom out of the 2S 20MP sensor?

The full resolution is 5472×3648. 4K is 3840x2160. This allows 5472/3840 = ~1.42x lossless zoom at which point pixels start to be enlarged.

The M4P uses the quad-bayer sensor in normal bayer, 12MP mode when shooting video. This has a native resolution of 4032x3024. 4K Lossless zoom is limited to 1.05x, essentially none.

You can get lossless zoom up to 2x in 1080p, if you wanted to shoot FHD.

 

[jojonono]

@jojonono, how do you figure you can get 3x lossless zoom out of the 2S 20MP sensor?

The full resolution is 5472×3648. 4K is 3840x2160. This allows 5472/3840 = ~1.42x lossless zoom at which point pixels start to be enlarged.

The M4P uses the quad-bayer sensor in normal bayer, 12MP mode when shooting video. This has a native resolution of 4032x3024. 4K Lossless zoom is limited to 1.05x, essentially none.

You can get lossless zoom up to 2x in 1080p, if you wanted to shoot FHD.

sorry i didnt understand the math behind this, u divided the 5k 5472 / the 4k 3840 and got 1.42x ?!... in 4k ?!

so for my Air 3s how to figure out the optimum lossless zoom @ 4k ??...

 

[BossBob]

It’s all down to the resolution you are going to publish your work at. When you digitally zoom you are discarding pixels around the edge of the frame. Zoom too far and you are losing pixels that would have been displayed and the remaining pixels have to be stretched during processing to fill your chosen display resolution. The best resolution is always the native resolution.

 

[jojonono]

It’s all down to the resolution you are going to publish your work at. When you digitally zoom you are discarding pixels around the edge of the frame. Zoom too far and you are losing pixels that would have been displayed and the remaining pixels have to be stretched during processing to fill your chosen display resolution. The best resolution is always the native resolution.

So ur basically saying since 4k is the highest resolution supported by the air 3s, I have 0 leg room to zoom in lossless when shooting at 4k ? Unlike in the air 2s like guy above explained??

That's kinda funny coz I found the other day using 2x digital zoom (72mm) was pretty decent and usable IMO..., anyways, will probably just stick to that an continue testing how far the second telephoto lens can zoom, am trying to achieve a clean dolly zoom say from 4x or 3.5x down to 1x

 

[BossBob]

No. It depends on the display you are aiming your final product at. If you take a 4K sensor and digitally zoom at 2x and then display the image on a 4K display you are only displaying a 2k image. Something has to make up for the data that you lost by using the digital ‘zoom’ as you have lost the data from outer pixels of the sensor. It will either be in your post processing when you upsample the image back to 4K or when you send a 2k image to the 4K display and the display interpolates the image back to 4K. If no interpolation takes place the 2k image shows with a black border.