Hi all, i tried to improve the result, here’s what i’ve got:
and the .pp3:
DSC_1390.NEF.pp3 (11.6 KB)
Did you use the “Pick white and black spots” tool? You are lucky with this picture, because there are plenty of spots. I picked the black stripe in the foregroud boat, and the white umbrella (…roof? what’s it called? please excuse my english :-D) on the background boat.
This finds the most appropriate exponents for the picture. Most probabily, i’ll be able to use the same values with most other pictures in the same film roll.
@Thanatomanic as for the artifacts, try using RCD demosaic method. I remember @heckflosse suggesting me to use RCD, but i can’t remember why. Anyway, trying it on this picture seems to smooth things out a bit. (There’s no use in choosing a super-sharp method since film grain is the limit here).
Also, the source negative shot is a bit too underexposed… look at the raw histogram, see how it is heavy on low values? This is wasting bit depth without any reason, i think.
@obe, could you try re-shooting the negative with higher exposure? You should definitely see some clipping in the in-camera preview. Then check the raw histogram in RT, that one must not clip.
This could (maybe) also improve the artifact problem.
I noticed you have a large border around the negative picture: try shooting closer and get a bigger negative if your lens allows. That’s because currently, calculations are made on the whole picture, so that border is affecting channel scaling, forcing you to use weird values for exposure and WB.
If you can’t shoot closer, there are cool features coming down the pipe, so stay tuned for next versions
Finally, try to use the specific color profile for your camera, if you have it. With my Sony, i discovered that if i use the standard DCP profile, applying the Look Table helps a lot (exactly as it does for a normal digital picture)
ps.: As @Thanatomanic i would also be worried about the amount of infrared that comes out of that halogen. For what i know, old slide projectors had a special element between the lamp and the film to filter out infrared. And… a huge loud fan
pps.: BTW, do you know what type of film it is? Just for reference. Thanks