Re: Profiling the ip5000
Re: Profiling the ip5000
- Subject: Re: Profiling the ip5000
- From: Dana Rasmussen <email@hidden>
- Date: Thu, 18 May 2006 22:47:33 -0700
- Thread-topic: Profiling the ip5000
>> Tagged or not, that's probably what's going to happen if you set PwP and the
>> driver correctly (as you point out, No Color Management in CS2). Tagging the
>> file would make no difference here.
>
> But again, I was talking about avoiding the system drivers and using
> Canon's Photoshop Plugin, which among other niceties is reported to
> take 16-bit input. I am assuming it also takes into account the source
> profile (of the open document you are printing). Unless it has a
> specific "max gamut RGB" or "RGB for profiling" setting, the most
> likely outcome for untagged source is that it will assume sRGB or
> something like that and print accordingly.
>
> -- Roberto Michelena
> Infinitek
> Lima, Peru
Canon is actually making a big deal of the export, and avoiding the os print
drivers entirely, and given the rather unique nature of the 5000 this might
be a good thing. It avoids the whole "what the heck is colorsync doing to
the color question" and allowed Canon to do things like take 16 bit images
and not resample down to 8 bit to print them. I still have a lot of work to
do to really understand the printer, but after talking to Canon's tech
people about it today, it looks like a very serious shot at Epson in a bunch
of ways.
I agree with Andrew here. The export does care if the file is tagged or
not. As long as it is RGB it knows what to do with the numbers.
It is going to present a challenge to profile to get the best results. I
think you will need to use the export, and importantly understand what is
happening with the Special 1,2,3,4,5 settings. I think this was the problem
I was having with my profile attempts so far. Now I have a better
undrstanding of how the export works, I suspect the results may be
different. Canon's own profiles are generated in house using 64,000 patches
using custom built hardware and software. They also feel that the variation
between printers is going to be very small, maybe less than Delta E 1.
>From the limited measurements I have done so far, at least on Ilford Smooth
Pearl (something I have lots of, and sell lots of) the prints are very
stable in dry down. Average Delta E change of less than 1 between a 3600
patch target measured right off the printer, and then 48 hours later.
I am looking forward to seeing more people with this printer, so far I am
very impressed.
--
Dana Rasmussen
Seattle, WA
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