OP
OP
If the negative doesn't look good, of course the print will be wrong. I have a lot of reading and thinking to do (again, more, more !)
The aim is : from a RGB image (and in the near future developed films), make it look like it was photographed using analog films, "virtually" printed on a photographic paper (or in the future maybe transparents, etc), using as much as possible physical, optical (and maybe chemical) processes, using as much science I can and the less possible compromises to that principle.
I will surely publish in the public domain what I have done when I consider it "good enough". It's been more than a year now that I am working on it in my spare time.
The B&W part works very well, I could compare my production to real situations with several films, where the pictures were taken both with a digital camera and an analog film camera.
I know that using a RGB image from the start "loses" information. You also gave me the idea to be able to process negatives. I can compute a reflectance (or a transmittance, that's nearly the same) from a RGB image or a negative to feed to my system, even if it is not perfect. This is for the moment the only approximation I allowed myself, the rest is pure science (well, is I can for the dyes part, but I'm working on it).
If any of you have both a digital and a (from film) printed picture (color or black & white, reversal or negative) from the same scene in the same conditions, please PM me or post it here, it will help me tuning and check my software. The pictures don't need to have a big resolution, low-res examples can suffice (not too low though). Of course you'll have to tell me which photo paper you used.
I only have a few B&W examples for the moment, and nothing really serious for color.
Oh, and if one of you lives in the Paris (France) area, I would be pleased to encounter you, if you are willing to show me how you work. I have very little experience in analog photography and development.
The aim is : from a RGB image (and in the near future developed films), make it look like it was photographed using analog films, "virtually" printed on a photographic paper (or in the future maybe transparents, etc), using as much as possible physical, optical (and maybe chemical) processes, using as much science I can and the less possible compromises to that principle.
I will surely publish in the public domain what I have done when I consider it "good enough". It's been more than a year now that I am working on it in my spare time.
The B&W part works very well, I could compare my production to real situations with several films, where the pictures were taken both with a digital camera and an analog film camera.
I know that using a RGB image from the start "loses" information. You also gave me the idea to be able to process negatives. I can compute a reflectance (or a transmittance, that's nearly the same) from a RGB image or a negative to feed to my system, even if it is not perfect. This is for the moment the only approximation I allowed myself, the rest is pure science (well, is I can for the dyes part, but I'm working on it).
If any of you have both a digital and a (from film) printed picture (color or black & white, reversal or negative) from the same scene in the same conditions, please PM me or post it here, it will help me tuning and check my software. The pictures don't need to have a big resolution, low-res examples can suffice (not too low though). Of course you'll have to tell me which photo paper you used.
I only have a few B&W examples for the moment, and nothing really serious for color.
Oh, and if one of you lives in the Paris (France) area, I would be pleased to encounter you, if you are willing to show me how you work. I have very little experience in analog photography and development.
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