Profile Inspector & grid points
Profile Inspector & grid points
- Subject: Profile Inspector & grid points
- From: "Vanderlinden, Thomas M." <email@hidden>
- Date: Mon, 27 Aug 2001 12:50:29 -0400
good morning - - - - -
My curiosity was raised by Bruce J. Lindbloom's reference
to "Apple's ColorSync Profile Inspector".
I have not been able to find reference to it at www.apple.com.
I was about to ask for help in finding it, and then wondered
if we're actually talking about the CHROMiX ColorThink
component that is called Profile Inspector,
which had this to say about the B2A1 tag in a profile
created for a color laser printer using the GretagMacBeth i-1:
Double Precision(16 bit) Multi-Function Lookup Table
3 input channels, 4 output channels
25 CLUT grid points
A profile of the same printer, created using Praxisoft WIZIWYG
had the following in the B2A1 tag:
Single Precision(8 bit) Multi-Function Lookup Table
3 input channels, 4 output channels
32 CLUT grid points
So, does "x CLUT grid points" mean the same thing as
"x grid points in each dimension"?
And aside from being odd or even,
are more "grid points" a good thing?
- - - - -Tom Vanderlinden
email@hidden
Bridgeport National Bindery
>
Date: Wed, 22 Aug 2001 09:28:45 -0500
>
Subject: Re: Relative vs Absolute in BestColor
>
From: "Bruce J. Lindbloom" <email@hidden>
...
>
You can easily determine if your printer profile has an even number of
>
samples by opening it with Apple's ColorSync Profile Inspector, double
>
click
>
on the B2A1 tag (which is PCS-to-device, relative colorimetric) and
>
reading
>
the line in the window that says "X grid points in each CLUT dimension".
>
If
>
'X' is even, then that is probably the cause of your dirty whites. If
>
that
>
is the case, then complain to the vendor of the software that made the
>
profile.
>
--
>
Bruce J. Lindbloom, Pictographics Intl. Corp.