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[filmscanners] IT8 calibration queries



Hi,

I've got a Minolta Elite and tend to generate raw scans via the Minolta 
software and either use the canned Minolta profile or process the file using 
Vuescan.  The Minolta profile is pretty good but, now that Vuescan has IT8 
calibration faclilties, I'm tempted to get a 35mm target and see if it makes a 
difference in scan quality.

I've been mulling over some practical questions and wondered if anyone has any 
thoughts:

(a) Multiscanning reduces noise which will alter the colour balance in the deep 
shadows.  (On my Elite, it cleans up the green channel quite a lot.)  To get 
the best shadow accuracy, should a profile be created for each multi scanning 
setting?

(b) The raw scans from Vuescan and the Minolta software are subtly different - 
it looks as though each calibrates the scanner slightly differently.  
Logically, a different profile would be needed depending on which package 
generated the raw file.

(c) Most IT8 targets are for Ektachrome but I notice that Coloraid also do Fuji 
targets.  How much practical difference does it make getting the closest target 
to the film stock you shoot?  (I normally use Fuji Sensia.)


Thanks,


Al Bond

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