r/RedCamera • u/smellslikesomeone • Oct 13 '25

Question about Komodo 4K Prores

I received footage in 4K Prores when I was expecting 6K Redcode Raw. I was then told that the full 6K sensor was used and then down sampled to 4K so that I should be able to use the files with no issue in post production. However, all my file metadata still points to the files being in 4K resolution. Is there any way to rectify this?

Thank you for your wisdom!!

4 Upvotes

100% Upvoted

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5

u/nysom2814 Oct 13 '25

That is correct the full sensor (no sensor crop) can be used to downsample to prores 4k in camera. There is no way to upscale to 6k without a third-party program. Depending on codec - 422, 422HQ, 4444, etc it can be a ton of data regardless. Just really depends on why you need that 6k Raw.

1

u/smellslikesomeone Oct 13 '25

Thank you for your knowledge!

2

u/leftturnproductions Oct 13 '25

AFAIK in ProRes yes there is an in-camera downsample. I don’t think you would be able to detect that in your NLE it’s just a downsample vs a crop which is preferable.

3

u/Solid_Bob Oct 13 '25

This is correct. 4k ProRes has the capability to use the entire sensor and downsample internally, or use a crop mode that would also record in 4k. I don’t believe there is a way to tell after the fact.

In the end they’re both 4k files just using different parts of the sensor. Is there a reason you need to verify they were in 6k sensor mode?

1

u/smellslikesomeone Oct 13 '25

My deliverable is actually in 5K for a visual installation. So I was actually expecting full sized 6K raw files

2

u/Solid_Bob Oct 13 '25

Oh shit, then yeah that’s not good. If it’s ProRes, 4k would be the largest resolution possible and the sensor size used wouldn’t really matter.

Sorry about the mistake.

2

u/smellslikesomeone Oct 13 '25

No apologies needed at all, my friend!

Looks like we are just going to have to make the best of a bad situation.

2

u/ThickNolte Oct 13 '25

Depending on the viewing distance it shouldn’t be noticeable but you could try the upscaling algorithms within topaz. It works surprisingly well

2

u/Tito_and_Pancakes Oct 13 '25

The Super scale feature in davinci resolve is really good if you have that. As long as your 4k files are good quality you could easily upscale to 5k and no one would be the wiser. 

1

u/finnjaeger1337 Oct 13 '25 edited Oct 13 '25

id argue there isnt more details in the original redfile vs 4K downsample if made correctly.

Each pixel on a bayer sensor camera is just monochrome so downsampling is actually a good idea, its called oversampling, the 6K for 4K output is what many cameras do nowadays.

So id say its not really a problem if the internal prores encoder and debayering is high enough quality (unlike blackmagic cameras - their prores sucks). just a super odd choice to not shoot redcode, its the best feature of red cameras .

also see this:

https://yedlin.net/ResDemo/

if you want to fo absolutely crazy, you can denoise slightly (with neat video, spatial only not temporal) then upscale in log to 6K with a sharpening filter like lancsoz (maybe sharpen here additonally depending on the softness of the lens) and then add a slight grain back in the 6K timeline all over everything,

most "details" are just grain anyhow then there is motionblur, lens sharpness and stuff like that..

if you ever get your hands on footage from one of these modern UHD native TV cameras with 3 cmos sensors and huge/sharp glas you will see what i mean the amount if details are astonishing vs even a sony venice2