Re: Colorimeters and third-party developer support
Re: Colorimeters and third-party developer support
- Subject: Re: Colorimeters and third-party developer support
- From: Graeme Gill <email@hidden>
- Date: Tue, 23 Aug 2011 12:19:40 +1000
Roger Breton wrote:
> I'm surprised that Eizo states that "human vision is nearer a 20 degree
> field-of-view"? I know I've heard of "rod intrusion", where 10 degrees is
> sometimes used, but "20" degrees? Are you sure you haven't had too much
> cappucino this morning?
Yes, they are being very loose and sloppy, to make their case seem
more impressive - typical marketing stuff.
The actual case of course is that our color vision varies with
the location on our retina. The central part has all the color
detectors, and the periphery has the low light, monochrome detectors
that have a different spectral response to the other three. Hence
the change in CMF's with different areas of interest (2 degree vs. 10 degree).
But the area with highest visual acuity corresponds to the area
with highest color discrimination, so if you are interested in
detail (ie. like photo's and documents), then a narrow field of
view is what's critical. If you are comparing paint on walls
or color monitors at a distance, then a wide field of view will
be important.
Graeme Gill.
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