TIF Scan Prep: Is It Necessary (or Beneficial) for TIF Files that are Already Gamma 2.2?

[Kaffir]

@nate

@nate

@sbadham

My understanding is that the TIF Scan Prep utility essentially does the following:

1. Takes the original TIF file and temporarily converts it to gamma 1.0 (regardless of the file’s original gamma);
2. Applies color multipliers to the gamma 1.0 color space; and finally
3. Converts the file to gamma 2.2 (this is the form of the TIF file that is then worked on by NLP).

Yes, this what the Tiff Scan Prep utility currently does.

But it is not! Tiff scan prep actually converts to the gamma 1, not gamma 2.2!

In my case Tiff scan prep produces the files ending with “gamma-1”
And this is the files converted from my linear tiff files with further gamma expansion

in terms of imagemagick
+gamma .45455
then
-gamma 1

where is that point?

@sbadham

Converts the file to gamma 2.2 (this is the form of the TIF file that is then worked on by NLP)