----- Original Message -----From: CDTobie@...Sent: Thursday, February 22, 2007 11:28 PMSubject: Re: [colorvision_group] CMYK profile using pfpro
In a message dated 2/22/07 12:51:02 PM, eeshdewan@gmail.com writes:
We plug the lab values in custom ink dialog box of photoshop. and we put the dot gain values in their respective boxes in dot gain column.
Then we save this cmyk setup, which is saved as a profile.
Am i missing something more or am i wrong in this?
This does indeed create the shell of a CMYK profile. Its has only one intent, lacks a lot of data typically built into a profile, and is based on dot gain assumptions that worked a lot better when dots were 150 dpi then they do at 1440 dpi. For instance, what if Cyan and Magenta don't blend linearly? Where do you measure that? (you don't). Even if you measure lots of patches per channel, thats still two dimensional data being stretched into a 3d profile. But yes, this will build a CMYK profile, of sorts.
C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@colorvision.com
www.colorvision.com
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Message
Re: [colorvision_group] CMYK profile using pfpro
2007-02-22 by Eesh Dewan
Hi,
Actually, I was trying to use printfix pro like in
this article written long time ago http://www.digitaldog.net/files/RGBtoCMYKconversons.pdf .
I understand we have moved a lot forward since that time in the world of color
management. Yes, i will acknowledge that you are absolutely correct, what i was
trying to say is that i feel i have a workable solution with it's limitations
but which gets us to a ballpark and maybe better than the canned profiles from
MY particular usage.
Regards
Eesh