Whats wrong with the histogram in vuescan?

  • Thread starter Thread starter Phil
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Phil

I previewed a neg and looked at the histogram, adjusted the black and white
points to the leading and trailing edges of the histogram as normal (using
the top of the 2 graphs). The scan looked very dull and when I looked at
the histogram in Photoshop I could see that it had bunched the levels in the
middle instead of spreading them over the 256 levels. I think I'm doing
something wrong. Has anyone got any ideas?

Phil
 
I previewed a neg and looked at the histogram, adjusted the black and white
points to the leading and trailing edges of the histogram as normal (using
the top of the 2 graphs). The scan looked very dull and when I looked at
the histogram in Photoshop I could see that it had bunched the levels in the
middle instead of spreading them over the 256 levels. I think I'm doing
something wrong. Has anyone got any ideas?

Phil
Click to expand...
The shape of the histogram is just a reflection of the distribution
of tones in your image. If you have a lot of middle tones you will
have a bulge in the middle.
The thing to watch out for is very high peaks at either edge. This may
indicate that you are clipping values that were different in the
original and forcing them to 0 or 255. This is fixed at the scanning
step by setting the black and white points properly.
 
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