[argyllcms] Re: Altering patch size - smaller?
- From: Graeme Gill <graeme@xxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Fri, 15 Mar 2019 12:39:36 +1100
Greg E wrote:
I needed to pull the command out of the littleArgylllGUI
and insert the -a .80, this fit everything on a single sheet, but I'm going
to need to get a new usb-serial adapter before I can test it.
The usual spectrolino measurement aperture is 4.5mmm while the default
hex patch diameter is 8mm, providing a 1.75 mm margin for positioning error
and diffusion of light within the paper affecting the measurement.
I guess you may get away with a 6mm patch, but it leaves less mechanical
margin, and causes the measurements to be more influenced by the color
of adjacent patches.
Another question is about the Spectroscan... Having used it on squares I
remember that I needed to touch down on three corners so that the device
new the size of the target. Does this still happen with the hex patches?
Yes, it's the same.
Colorport defined the three corners with a number so that you knew which
ones to position and which order to do them in. The hex patches are new to
The indexing is the same. You still have to position the instrument in
three places to set it up for a scan.
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