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Change film simulation in jpg (no RAW available)


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Hi everyone;)

I shot a series of pictures in JPEG (no RAW available) with the WRONG film simulation: camera was set to VELVIA by mistake while shooting portraits, so they look too saturated!

Is there any way to "automagically" convert the jpeg from one film simulation style (VELVIA) to another one (e.g. Pro Neg Hi)??

Thank you very much for your help!!

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12 hours ago, Bella Font said:

Is there any way to "automagically" convert the jpeg from one film simulation style (VELVIA) to another one (e.g. Pro Neg Hi)??

Yes, with a suitable LUT file (cube) this is possible with FFMPEG. However, only as far as the data in the JPEG photo is still available. It is better to take the photos again (incl.RAW) so that something like this never happens again.

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Hi cpX, thanks for your response!

I am not familiar with FFMPEG nor LUTs, but I see that there seem to be LUTs for fuji's film simulations:

https://www.dpreview.com/forums/thread/4463001

However, they seem to do this on the RAW file, which I don´t have available.

Are you suggesting that I reverse-apply the VELVIA LUT and then forward-apply the ProNegHi LUT?

PS I have learned my lesson and in the future, I will definitely save in RAW for important pictures.

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7 hours ago, Bella Font said:

However, they seem to do this on the RAW file, which I don´t have available.

You need the appropriate LUT (cube) file for this to work. This is also possible with JPEG photos. Just not so accurate because the JPEG photo has only 24-bit resolution. (RAW = 42-bit).

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