Re: Monitors and individual gun control
Re: Monitors and individual gun control
- Subject: Re: Monitors and individual gun control
- From: email@hidden
- Date: Tue, 12 Jun 2001 16:13:54 EDT
In a message dated 6/12/01 1:36:53 PM, email@hidden writes:
>
Often overlooked in a calibration application is the control of dark gray
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bias
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often called black level. These three controls mirror the function of RGB
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gains only at a very dark luminance, usually 8 candela/m2 or so. Monitor
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manufacturers have recently included these adjustments to improve the gray
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balance at dark levels. Setting RGB gains without adjusting RGB bias amounts
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to half a calibration.
Hmmm... mathematically half, perceptually maybe 80% to my eye, as the gain
effects lighter colors that are much more readable by the eye than the near
black colors most effected by bias. No doubt adjusting both would be ideal,
but as colorimeters, such as the Sequel device used by LaCie, are weakest at
reading the color value of tones near black, adjusting these tones is less
accurate as well as less important.
C. David Tobie
Design Cooperative
email@hidden