Re: ImagePrint
Re: ImagePrint
- Subject: Re: ImagePrint
- From: "Cris Daniels" <email@hidden>
- Date: Wed, 22 Jan 2003 20:15:05 -0400
>
According to ColorByte (John specifically) this is exactly what to do. Plus
I've found that when I output my target using this setup, but change the
paper profile, I get an identical print (I've even measured them). So the
paper profile isn't doing a thing when you have an untagged file in the RIP
and the Bitmap popup set to none. Bottom line is I've produced to fantastic
custom profiles this way (Luster and Ehhanced Matt).<
The last time I tried this, I wasn't able to get profiles to respond the way
they should. A few months ago I tried this workflow and killed the color
management, printed an untagged 4" square of RGB 0,0,0. It wasn't black, it
was very grey. Turn on the color engine, pick a canned profile, and the black
was full black. At least with the particualar build I was running at the time,
you are not getting cartridge black by turning off the color engine, hence the
workflow is impossible. I'll have to try this again to see if this was
indicative of a certain build, but if it holds true, simply using ImagePrint
without using the integrated color engine will leave you with prints that
could always be better.
>
If you set the IP profiles in Photoshop's soft proof (after running profile
first aid on them so they show up), and you pick paper white/ink black, you
get somewhat close but it's never been identical. I sat down with John at
ColorByte and we set both applications and didn't get an exact match. The
difference is apparent (IP previews darker). I don't trust what I see in the
soft proof. <
The Colorbyte color engine obviously does not work exaclty like
Photoshop/Adobe CMM. I know that they do things their own way as far as color
managment, and treat black differently. I'm not sure I really care what the
image soft-proofs like in Photoshop or ImagePrint, the whole concept of
profiles is to get the image you want on the screen and let the profile for
each media type handle printing the image with accuracy that maximizes the
quality on each repsective media used. Optimize the image (with calibrated and
profile display) and ship it to ImagePrint, let the profile and suitable
rendering intent handle all the work. Images are obviously going to loose
contrast in the preview when printed on a fine art media with a higher L value
than an RC photo paper, this is ok and people shouldn't be using the preview
as a method of adjusting contrast because a good profile will already print
optimally and you likely to create a whole lot of problems adjusting images in
the preview if you are not experienced and inderstand the ramifications.
>
All the other ICC savvy applications I have match Photoshop. I can open a
scan in FlexColor (Imacon's scanner/camera driver) and it's preview is 99%
match of Photoshops. IP is 80% at best.<
I can't speak for John but because they don't use Colorsync, ICM, or Photoshop
Adobe/CMM, the difference is due to the fundamental way that they treat
display profiles. John explained it too me before, but frankly I can't
remember his exact words.....
Cris Daniels
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