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Message

[colorvision_group] Re: Baffles me

2006-06-30 by David Miller

Hi David et. al.:

Now I know I am truly out of my depth. I got the following email from
David's company this morning (Hong Kong time):

-----------------------------------
It looks like the Canon Pixma is a CMYK printer if that is so, then
PrintFIX Pro will not support it. Unless, the Canon comes with RGB
drivers.

Thank you,

Elana Leventhal
ColorVision US Customer Support
http://www.colorvision.com
1-800-554-8688
-----------------------------------

So, it would appear that I cannot use PrintFIX Plus to get my printer
and my monitor in closer color agreement. I have no idea what the
difference is between a "CMYK" and a "RGB" printer but I damn sure
would have bought an RGB printer if I knew I wasn't going to be able
to get color matching prints from this set-up! Too late now. It is a
brand new printer and I cannot afford to buy another one.

To set the record straight:

What you have is an "RGB" printer, because you are printing to it through
an RGB workflow via Photoshop and a standard Canon printer driver; not through
a 3rd party RIP.

So disregard all of that. Your printer is fine.

If anyone knows of anything else I can do to solve this problem aside
from making adjustments for each print I make by trial and error,
printing it, then making more adjustments, etc. etc. I would be very
appreciative to hear it.

What you do with PrintFIX Plus is find the set of measurements, from
the existing set, that are closest to what you are trying to build a profile
for; build a profile with sliders set to 0; do a test print through the profile;
and then go through several iterations to tune printed results, building a
profile and doing another test print. Compare your test print to your
(already calibrated) display and adjust until they match as closely as possible.

Ideally, there would be a set of measurements included with PLUS that
would cover every possible variation of manufacturer, printer model, paper,
and ink, so that the starting point would be as close as possible to your
exact printer. In practice, that still isn't the case. We've expanded the
list of measured targets in the 1.1.1 software, but it doesn't cover every
Canon model manufactured, past and present. We will continue to add
new target measurements to the list as time goes on so that there will be an
ever-expanding series of "starting points", but for the moment: if you don't
see your printer specifically listed, you need to start with what seems like
the closest equivalent from the listed target measurements and proceed with
slider iterations after that.

You don't need to do this for each print that you will eventually make; once
you've arrived at a good profile, you won't typically rebuild the profile
with other variations for individual prints.


Best regards,

-- 
David Miller
Senior Software Developer, Digital Color Solutions
ColorVision

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