Spyder with newest Optical update
Spyder with newest Optical update
- Subject: Spyder with newest Optical update
- From: "Russell Proulx" <email@hidden>
- Date: Sat, 27 Sep 2003 22:53:14 -0400
- Priority: normal
I was just reading Colorvision's Spyder/Optical Guide (after downloading
the most recent Optical update) and read the following:
"It is preferred with Windows PC's that the Spyder be plugged into a
separate PCI USB card rather than into USB ports built into the
motherboard."
Anyone know why the USB ports on a contemporary motherboard might be
considered inappropriate for using hardware calibration devices?
I also wonder about the Spyder's .30 black 'precision mode' target setting
in the previous version of Optical? In Real World Color management there's
a test for the black point outlined which suggests raising and lowering the
black value of a selected area of a 100% black image in RGB and noting
whether a difference can be seen when lightening 1 to 2% while using the
monitor colorspace. With a blackpoint target of .30 I easily see a
difference between 0 and 1 and continue to see a difference if I set my
brightness even lower. Is .30 is too high? I'm using a Mitsubishi
DPro2040u.
With the most recent version of Optical I now note that there are NO longer
any preset default settings for white or black points and when I select
proceed the suggested defaults are .19 and 88. Is the visual target
offered by Precal perhaps more accurate than any predefined measurement?
Does this also suggest that the old 80 luminance was too low? The Precal
suggested luminance range for the RGB color guns in 85-95. Is higher
better? I'm not matching multiple monitors in a group workspace.
So many questions ;-)
Thanks for any answers.
Russell Proulx
Montreal, CANADA
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