Display Gamma: Factory vs calibration vs working space
Display Gamma: Factory vs calibration vs working space
- Subject: Display Gamma: Factory vs calibration vs working space
- From: "amadou diallo" <email@hidden>
- Date: Wed, 17 Nov 2004 11:12:46 -0500
The Eizo LCD is factory adjusted for 0-255 steps in a 2.2 gamma. I've
calibrated the monitor to a 2.2 gamma (6500k and 95cd/m). When creating b/w
gradients in both RGB and grayscale modes, PS working spaces with 2.2 gammas
display with absolutely no banding. Work spaces with gammas of 1.8 and 2.0
(custom) both show slight banding towards the shadow end. AGP card is
nvidia geForce4 MX. My understanding has been that hardware gamma,
calibration gamma and Ps wk space gamma do not have a direct relationshiop
and certainly don't need to be identical. What exactly is the relationship
between these 3 values? And why, with a 10bit LUT would working space gamma
changes introduce banding?
Thanks
amadou diallo
diallophotography.com
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