Re: filmscanners: Scanning 101...A basic question...
- Original Message - From: Arthur Entlich [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, June 11, 2001 2:06 PM Subject: Re: filmscanners: Scanning 101...A basic question... Marvin Demuth wrote: I have read the recent debates over working with raw files and those produced via profiles and I am confused. In working with scanning color negatives, if you choose to work with the raw file that is supposed to have all the information in pure form, what is your starting point for getting an acceptable image on your monitor as your starting point for your adjustments? Obviously, some software has to used. I am trying to relate this to printing color negatives, which is within my experience. With this process, for any degree of efficiency, you have to start with color filtration commensurate with the film you are using. Marvin Demuth I think Marvin makes an obvious but very significant point here. A raw scan of a negative, should be negative, not positive. Any manner of converting it into a positive means some type of profile has been actuated on it. Art In performing the scan, of negatives, to produce the raw scan aren't scanners/software varying the color channel exposure to remove the negative mask? Even if this exposure variation is based on some sort of measurement of the film done by the scanner, it represents profiling in the general sense. Bob
RE: filmscanners: Scanning 101...A basic question...
Robert writes ... In performing the scan, of negatives, to produce the raw scan aren't scanners/software varying the color channel exposure to remove the negative mask? Even if this exposure variation is based on some sort of measurement of the film done by the scanner, it represents profiling in the general sense. The general sense of the profile is gamma, whitepoint, and gamut. What do these characteristics have to do with measuring and subtracting the specific shade of the mask? Not that I know specifically how its done, but professionals have been doing it for a lot longer than there have been profiles. shAf :o)
filmscanners: Scanning 101...A basic question...
I have read the recent debates over working with raw files and those produced via profiles and I am confused. In working with scanning color negatives, if you choose to work with the raw file that is supposed to have all the information in pure form, what is your starting point for getting an acceptable image on your monitor as your starting point for your adjustments? Obviously, some software has to used. I am trying to relate this to printing color negatives, which is within my experience. With this process, for any degree of efficiency, you have to start with color filtration commensurate with the film you are using. Marvin Demuth
RE: filmscanners: Scanning 101...A basic question...
In working with scanning color negatives, if you choose to work with the raw file that is supposed to have all the information in pure form, what is your starting point for getting an acceptable image on your monitor as your starting point for your adjustments? First, I set the setpoints (darkest black and whitest white), then I invert the image (you can do the inversion first if you want). Then I adjust the tonal curves. That's it. I really can't relate it to darkroom work, sorry...perhaps someone else can?
Re: filmscanners: Scanning 101...A basic question...
Marvin Demuth wrote: I have read the recent debates over working with raw files and those produced via profiles and I am confused. In working with scanning color negatives, if you choose to work with the raw file that is supposed to have all the information in pure form, what is your starting point for getting an acceptable image on your monitor as your starting point for your adjustments? Obviously, some software has to used. I am trying to relate this to printing color negatives, which is within my experience. With this process, for any degree of efficiency, you have to start with color filtration commensurate with the film you are using. Marvin Demuth I think Marvin makes an obvious but very significant point here. A raw scan of a negative, should be negative, not positive. Any manner of converting it into a positive means some type of profile has been actuated on it. Art
