Profile of a photo lab
Profile of a photo lab
- Subject: Profile of a photo lab
- From: Mike Strickler <email@hidden>
- Date: Fri, 25 Sep 2009 11:55:04 -0700
Previously posted without subject (sorry):
Hi John,
I can answer this because I've actually made profiles for a
commercial lab. In this case the goal was to provide the lab itself
with custom profiles for converting customer-supplied files to the
printer's native output space with several different Fuji papers
plus a Kodak Endura metallic. I had access of course to the lab and
the printer's workstation. The RIP had clear, logical color
management settings much like any RIP or Photoshop. We turned off
CM and output a custom RGB target and profiled the device (a
Chromira) just like any RGB printer--no big deal. All incoming
files were subsequently converted to these profiles for output.
These profiles were also supplied to customers who were interested
in improving their soft proofing or performing their own
conversions to get a preferred print price.
As others have alluded, the difficulty comes in when you do not
have access to or knowledge of the color management being employed
in the lab. The worst situation--impossible, really--is, as Ray
Maxwell said, when some sort dynamic color adjustment is being
employed. This sort of image-by-image "optimization" defeats all
attempts to color manage from your end, so just forget it. On the
other hand, if the system applies the same conversion or adjustment
to every image you have a steady condition you can profile. You
might be profiling on top of another profile, but it can still be
useful for your own soft proofing.
Mike
------------------------------
Message: 4
Date: Thu, 24 Sep 2009 15:11:23 -0500
From: Jon Crook <email@hidden>
Subject: Profile of a photo lab
To: ColorSync <email@hidden>
Message-ID: <C6E13C9B.138A%email@hidden>
Content-Type: text/plain; charset="US-ASCII"
How would one make a profile of the output from a photo lab? My first
instinct would be to send an ECI or IT8 target to the lab and make
a printer
profile of the print that comes back but the photos must be in RGB
going to
the lab. What would be the proper procedure for this?
-
Jon Crook
Director of Color Management
Corporate Image
www.corp-image.com
800.247.8194
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