QTR-Quadtone RIP

Hi Byron,

The eyedropper in Photoshop can be confusing.  There's a lot going on
behind the scenes with it.
When you look at the values that correspond to the file type its very
simple -- you see what's in the
file.  In other words RGB eyedropper with RGB file you see the exact
values, Gray eyedropper with
grayscale file you see 8 bit values as percents. (this is a simple
calculation (255-0) --> (0-100)).

But when you look at RGB eyedropper with grayscale file the conversion
is done using color management.
With an untagged file the Color Settings...  selections dictate how
the conversion is done.  In your
case the file will be treated as having the Gray Working Space and be
converted to the RGB Working
Space in order to show you the values in the eyedropper.   So what has
happened is that you've
changed either or both of the working spaces in Color Settings.

So the target file is just fine.  Whether or not you get identical
results compared to before depends
on the exact workflow and if it contains some color management
conversions.  The best thing to do
is try things out and see the actual results.  Going into Color
Settings and figuring out what your
old settings might be is probably not too hard either.

Roy

On Mon, Dec 6, 2010 at 8:03 AM, Byron <byronsky@...> wrote:
> Thanks much for the grayed out custom sizes fix!  My latest issue is with rgb values no longer corresponding with percentages as they used to (in the same color space).  Last week the 21-step greyscale linearization downloaded and opened in an 8-bit untagged gray space with 100%=RGB 0, 95=17, 90=28, 85=37, etc. Today, having finally resolved the custom paper size issue, the print values are wrong. 100% is still RGB 0, but 95 is now 14, 90 is 21, 85 is 28, 80 is 36, etc...all with same document profiles, archives, version of photoshop (CS4).  As I use these for negatives, densities change, and everything will need  recalibration if I can´t get back where I was.  Or what obvious error am I overlooking?  Much thanks,
> byron
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