[argyllcms] Re: DTP20 (Pulse) patch size error
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Sat, 20 Aug 2011 11:54:52 +1000
Alan Goldhammer wrote:
> happening sporadically. It may be for some measuring instruments that the
> tolerance is so close that slight shrinkage causes a misread. I profiled
> all my papers using an i1 Pro with ArgyllCMS generated targets from a Win7
> machine using the Adobe Utility and did not get any misreads. The measured
This is the case. The i1pro & ColorMunki recognize patches from the readings
it takes, which is why it needs a distinct contrast between each patch, or a
contrasting patch spacer. As a result these instruments won't notice any
slight change in scale.
The DTP20 on the other hand has a reference scale on it's ruler so that it
knows exact distances. It therefore doesn't need any contrast between the
patches, but is likely to be much more sensitive to the exact patch length.
Graeme Gill.
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