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[filmscanners] vuescan: IT8 calibration for negatives?



Hello all,

I recently started scanning using a Minolta Scan Dual II. I am
reasonably satisfied with the results, but I am seriously considering
using Vuescan to bring out some more details. I am reasonably fussy
about color so I am tempted to try the professional version with support
for ICC profiles + IT8 calibration.

However, I do have a few questions about an IT8-calibrated workflow. I
hope someone can help me out...

1) I usually use negative film. Does IT8 calibration make a difference
for negatives as well? I can imagine that the difference will be less
obvious than for slides, because the color-cast removal messes up the
colors anyway. On the other hand, a calibrated scanner could give a
better starting position for vuescan to remove the color cast...

2) I found that you can usually buy different types of IT8 reference
targets; one for every major type of film (ektachrome/velvia/other
fuji...). Why would you need a different target for every type of film?
I would assume that there is only one `correct' calibration, regardless
of the film material. What am I missing?

3) IF IT8 calibration is useful for negatives and there IS a difference
between target types, which one would be the best?

Thanks in advance!

Simon Tindemans


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