[argyllcms] Re: Wrong gamma reading with Spyder 3.
- From: Darzur <zurdar@xxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 08 Nov 2010 17:58:33 +0100
On Mon, 08 Nov 2010 07:41:00 +1100, Graeme Gill
<graeme@xxxxxxxxxxxxx> wrote:
>As explained in the link I posted before, Argyll reports an approximate
>gamma that is the equivalent zero based (ie. no offset) power curve that
>has the same value at 50% as the real curve. A visual scale based on
>black and white stripes will (probably) be a power curve offset
>at zero, because it is composed of a real black that is non-zero.
>Naturally, these two different ways of interpreting gamma are
>not the same.
Hello Graeme,
I still have no idea how to calibrate monitor properly. Please look
here:
http://img72.imageshack.us/img72/8079/outputx.jpg
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
LUT level by slight brightening at 50% input what perfectly
corresponds to my visual observations. Unfortunately after calibration
I have curves like this:
http://img695.imageshack.us/img695/1075/curvesz.jpg
so my question is - why is it happen and how to avoid it?
--
best regards,
darzur
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