[argyllcms] Re: Wrong gamma reading with Spyder 3.

  • From: Graeme Gill <graeme@xxxxxxxxxxxxx>
  • To: argyllcms@xxxxxxxxxxxxx
  • Date: Wed, 10 Nov 2010 03:37:06 +1100

Darzur wrote:

I still have no idea how to calibrate monitor properly. Please look


it's clearly visible that actual output from my monitor (at 50% input)
is a little bit darker than actual target. It should be corrected at

Hi, I'm not sure what you mean. Your report shows good agreement
with the target. The 50% mark is has a mere 0.2% error. Given
the limitations of the vcgt control, instrument measurement
repeatability and display instability, this is very good.

LUT level by slight brightening at 50% input what perfectly
corresponds to my visual observations. Unfortunately after calibration
I have curves like this:


Sorry, I have no idea what this represents, so can't interpret it.

Graeme Gill.

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