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I have a set of 200+ RAW files that need to process for a timelapse. They were taken in a 30s time interval during sunrise. I had to change the shutter time several times to adjust exposure on the images.

My usual process is to load files in Photoshop Elements. Here I have a set of preferences I can adjust:

Photoshop Elements screenshot

I adjust all of them, and wouldn't want to miss any.

However, the set of RAW files I have now requires me to adjust some of these settings individually. Say: first image +1.0EV, last image -1.0EV, interpolation in between. Similar procedure for the temperature.

This is quite cumbersome with the given software. I have to play around a lot to find good settings, manually doing this is not an option.

I am familiar with Python and was looking into rawpy and rawkit. As far as I could tell, they obviously don't have the same functionality. At least the "Clarity" function is not available.

I would like to know what (other) options I do have to do this? What is your experience?

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This is the sort of thing I've been doing with a set of Python components I've developed which I call "Pyctools". It's all a bit experimental and definitely not user friendly - I wrote it for my own purposes so it reflects my mindset. https://github.com/jim-easterbrook/pyctools-demo/tree/master/src/scripts/photo_processing

If you fancy a challenge, it might be a good starting point for what you want to do.

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  • This looks like a nice tool. I will definitely try it out at some point. – MarkusTLL Feb 28 at 16:28
  • Not so much a tool as a set of building blocks, so doing anything useful will involve some work. I'll be interested to hear how you get on if you do have a go. – Jim Easterbrook Feb 29 at 10:24

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