Re: colorsync-users digest, Vol 3 #789 - 16 msgs
Re: colorsync-users digest, Vol 3 #789 - 16 msgs
- Subject: Re: colorsync-users digest, Vol 3 #789 - 16 msgs
- From: Richard Kenward <email@hidden>
- Date: Wed, 7 May 2003 23:13:45 +0100
In message Wed, 7 May 2003, Bruce Fraser write:
The drift is there, but you have to look for it quite carefully. With
UlltraChrome on the Epson Enhanced Matte and Premium Luster papers I
can measure shifts of about 2-3 deltaE over the first 24 hours, mostly
in the greens (cyan and magenta shift in opposite directions). You
won't detect it if you only measure the primaries -- I found it by
keeping the Bill Atkinsons 918-patch target on the Spectroscan and
re-measuring for 24 hours. 3 deltaE isn't a lot, but when it's on a
profiling target, the difference can easily get amplified. I'd have to
agree with Cris on this one.
That said, I haven't found any inksets that do noticably better, and a
good few that do much worse. I gave up measuring Canon dyes after a
week because they were still changing...
Bruce
--
email@hidden
Dear Bruce
I realize that the main thrust of the discussion concerns the larger
machines for use as contract proofers, however my present interest is
with a replacement for our Epson 5000. Having been impressed with what
I have seen out of the Canon 2200 I am a little surprised by your
assertion that the Canon dyes were still changing after a week!
I found the test print I measured daily showed very little change but I
have no way of knowing how old the print was when posted to me. A
further point which has bothered me is the suggestion that the black is
insufficiently dense for contract proofing work. Would you or anyone
here like to comment please regarding the density issue?
Many thanks
Richard
--
Richard Kenward
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