Spectral film simulations from scratch

Ahh I see. I am experiencing the same white balance difficulties, so maybe including the wb coefficients would be benefitial? Perhaps a collapsible sub-menu called WB adjustments or something?

Nothing really happens when I load up the preset.

Is there some way of increasing the saturation in a node after the filmsim one?
I’ve been searching for a simple HSL tool or something, but cannot find any means of increasing the saturation besides the Color node, which seemingly can’t be added a second time after the filmsim.

I agree that there might be something wrong with the order of operations, as it affect the grain.

Also, I notice that the halation stays unaffected when changing the film exposure. Halation in film-negatives is very exposure dependent - only the brightest of exposures manages to burn all the way in and get reflected as halation.

@arctic 's original implementation seems to only affect high contrast and high exposure areas, not the totality of the image.

I might try to do a halation comparison between the python script and the VKDT when I have the time.

For someone who wants to try this for the first time: what is the recommended „version“ - the original pythom program, ART or vkdt?

The original is in a different league imho. I’t does grain and halation in a way that to my eye is way closer to film. Those things are also important to the film look.

Unfortunately it’s also in a different league in terms of being incredibly slow and cumbersome to use!

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