Re: Working with labs
Re: Working with labs
- Subject: Re: Working with labs
- From: "jc castronovo" <email@hidden>
- Date: Tue, 8 Feb 2005 04:03:53 -0500
The problem here is that most labs running such machines are incapable of
turning off the front end image processing that's built into the machine. As
such, there's no way to predict what will happen to the image as it will do
something different every time depending on the image content. Most
operators are completely unaware of this.
I just went through this discussion with the people at ZBE who make the
Chromira printers. Their software also drives the Agfa DLab laser photo
printer which I own, and they were totally unaware that the DLab needed to
be addressed in "repro mode" which turns off all color adjustments. People
who own the labs don't even know this mode is available, and they wouldn't
use it if they did because it seriously cuts into production time.
All attempts to profile this workflow will fail unless the lab can first
guarantee that it will use a printing mode that doesn't automatically alter
the image based on its content and only then, as you say, agree to not alter
the image based on what they see on the monitor.
john castronovo
tech photo & imaging
----- Original Message -----
From: <email@hidden>
To: "edmund ronald" <email@hidden>;
<email@hidden>
Sent: Monday, February 07, 2005 11:08 AM
Subject: Re: Working with labs
I am thinking of using the following steps:
1. Have them print testchart. Create my own profile "X" with my
i1Match software.
2. Take my file, in ProRGB. Convert to X using my favorite intent (eg.
relative).
3. Tag the file (Assign) as sRGB and hand it to them.
This will only work if they *don't* convert using the color profile,
otherwise your lie will cause bad color . However, if they don't convert
from sRGB to something else, then the tag is not going to do anything
anyways. My usual answer is to tell them to print my file exactly as I
send it, without conversion (since I've already converted to the printer
profile) and to ignore any screen preview they may get. This all assumes
they use the RGB driver for the printer, not some PostScript RIP, if they
use a RIP, that could throw a wrench in the process.
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