On Wednesday 31 March 2004 01:34 pm, GSR - FR wrote:[EMAIL PROTECTED] (2004-03-31 at 2011.13 +0200):
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I am busy window shopping on Ebay etc. If the monitor has an adjustment for color temperature is that the equivalent of adjustable gamma? Or are they different parameters?
No, it is an other thing. There are 4 important parameters:
- white point and black point, both are adjusted with brightness and contrast settings
- colour temperature: a tungstene light has a colour temperature of about 3200K, a flash lamp gives you a colour temperature of about 5500K, sunny daylight is about 6500K. With high colour temperatures, the colour cast is blueish, with low colout temperature, it is redish.
Normal office work dispaly uses color temperature as high as 9300K. For photography, 6500K is better.
- gamma : this is the non linear function transfer of the brightness given by the display as a function of the pixel value.
-- - Jean-Luc
-- John Culleton
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