Re: Matchlock Cyan Skies

["Joel Wilcox" <jowilcox@blue.weeg.uiowa.edu>]

<x-charset iso-8859-1>> At the moment I'm rescanning a
> few my MatchLock Profiler targets using VueScan on my Epson
> Expression 636 to see if it changes colour rendition (thanks for the
> suggestion). It does indeed seem to shift the blues away from the
> purple I had been getting, but of course most of my other settings
> change slightly as well, so it will take some time to nail it all
> down. I think my fellow scientists would call this changing too many
> variables at once! I haven't been able to tell yet if I will now get
> cyan skies <g>. Maybe I should quit before it's too late. (It's also
> 1:00 AM here, so I will soon stop making any sense at all).
>
> Someone asked Dan Culbertson for his list of media setting
> effects, so maybe he will have some suggestions.
> If I come up with anything, I'll pass it on.
>
> Roger Smith

Thanks Roger.  Will look for further news from you.

With Vuescan I used "none" for the color balance, AdobeRGB space (to match
my working space), with image contrast and image brightness values at "1"
(i.e., the default).  Trouble is, Ed does change these values as he
introduces incremental improvements.  In any case, I suppose one could look
for different settings there as well.  I'm reluctant to do that though.  The
scanned target looks more lusty and saturated in PS and I am bowled over by
the vibrancy of the color from just the straight, un-slidered profile.

As we've noted very often, the intensity of the cyan in blues seems to be
related to saturation.  The Vuescan-generated front end for the profiles is
obviously resulting in a more saturated profile.

Joel Wilcox

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