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Re: [colorvision_group] Re: 3 questions concerning calibration procedures with spyder express/ 2suite/ p

2006-04-27 by CDTobie@aol.com

In a message dated 4/27/06 2:37:21 AM, esimanor@... writes:


> Well, not quite I am afraid...
> Ambiant light is less of a problem for me since I am in control of my
> work environment and my clients claim that they are too.
> 
Yes,   but I often find this claim backed up, these days, with a very dark 
room with a high luminance LCD in it, creating glare, and inappropriate viewing 
conditions, or conversely, someone using a CRT under what THEY consider dim 
light, meaning not full US office lighting, but still way above what a CRT can 
be used for color work under...

> But what do you call hardware controls? are these "brightness"
> and "contrast" on your display?
> 
Correct...

>  in which case we are back to square
> one: what are the corellations and what is the purpoe of being able
> to fix your black and white point in candela units through software?
> 
Correlations   to what, through what? The black luminance is monitor black, 
unless you choose to compromise that to the weakest black of a group of 
monitors, for exact side to side matching, and the whitepoint and white luminance are 
from the ambient target, and these candela values are reached by manipulating 
the hardware controls (front panel controls on most monitors). But I believe 
I've already said that, so I suspect there is a discontinuity between what I'm 
saying and what you're asking.

C. David Tobie
Product Technology Manager
ColorVision Business Unit
Datacolor Inc.
CDTobie@...
www.colorvision.com

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