I presume your ColorSync workflow runs like this:
- image in 16bit ProPhoto
- Print with Preview
- set "let printer manage color"
- set rendering intent
- epson driver
- set paper type and print resolution options
- set color management -> colorsync
So what happens is that Photoshop renders the data to the print
driver in 8bit form, having done an implicit conversion, and then the
Epson driver renders the data with conversion for the paper type,
inkset, and ColorSync profile.
The results can be very good, and difficult to distinguish from the
'all photoshop' printing workflow ...
- image in 16bit ProPhoto
- Print with Preview
- set "let photoshop manage color"
- set paper/inkset/printer profile and rendering intent
- epson driver
- set paper type and print resolution options
- set color management -> off
The difference is when/where the conversion to 8bit happens relative
to the profile conversion. In the latter workflow, the profile
conversion happens before the 8bit conversion, in the ColorSync
workflow the profile conversion happens later. Depending upon the
paper type and the exact printer model you have, it might be
difficult to demonstrate the difference. Also, the quality of the
ColorSync profile for a given paper/inkset/printer is a factor.
The R2400, K3 inkset, and supplied profiles for Epson Enhanced Matte
and Epson Fine Art Velvet (my standard papers) are very very good,
there have only been a couple of occasions where I found any reason
to fine tune the printing process with the driver controls.
Godfrey
On Sep 7, 2006, at 3:23 AM, Paul Stenquist wrote:
> I use ColorSynch for printing, so I'm not sure how this relates. I do
> all processing on a 16-bit file in Pro Photo Color Space, which is
> said
> to be an even wider gamut than Adobe 98. I save that original. If I'm
> going to print a file, I convert it to Generic RGB, then convert to 8
> bit,. I select the profile for my paper in the print box, turn on
> ColorSync management in the print box and hit the button. I'm printing
> on an Epson 2200. I get beautiful results this way. I'm not sure if I
> could do better some other way. But past experiments have always
> led me
> right back to this method.
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