Re: colorsync-users digest, Vol 3 #1026 - 6 msgs
Re: colorsync-users digest, Vol 3 #1026 - 6 msgs
- Subject: Re: colorsync-users digest, Vol 3 #1026 - 6 msgs
- From: Prep Color <email@hidden>
- Date: Wed, 29 Oct 2003 07:27:41 -0600
Marc, I read your comments with some interest. I have been using
CompassProfile to create 8-bit cmyk profiles for our Polaproof and
HP500 Inkjet. Recently, a colleague imported one of my Polaproof
profiles into Monaco profilemaker, and re-exported it for me as a
16-bit from Monaco. (This was a workaround to get the profile accepted
by our iGen's RIP... for whatever reason, it will not accept my
CompassProfile-created .icm files. I don't know if it's 8-bit vs 16,
or what... but it will read them after they're exported from Monaco.
But I digress!)
Viewing the gamut of each in ColorSync Utility, the 8-bit looks
alarmingly jagged, especially in the shadow area. The 16-bit
re-export looks nice and smooth in contrast. When I load the 16-bit
profile into WasatchRip as my source, I get slightly improved density
in the shadow areas- but it's a modest change. Still, this
intrigues me- are there strong advantages for a 16 bit profile?
Also, regarding your comments on linearization before profiling: I
have experimented with calibrating the HP5000 to make fairly linear
0-100% gradients on the individual inks before profiling, I have also
tried calibrating it to create neutral grays before profiling, which
required a pretty major change in the base calibration. I wasn't
able to choose a clear winner, can you give me some insight into your
experience with this tactic? Sorry if this has been hashed out
before. I look forward to reading your comments-- or if you have a
link to point me to, that would be greatly appreciated!
Randy Norian
ACME Printing, Des Moines Ia
On Wednesday, October 29, 2003, at 12:00 AM, Marc Aguilera wrote:
IMO the secret is in the linearization, and profile bit depth.
Marc Aguilera
ColorCritical
www.colorcritical.com
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