Re: [Devel] On GRAYS_USE_GAMMA

[Matthijs Melchior]

Billy Biggs wrote:

> Matthijs Melchior (address@hidden):
>
> > Well, I have read much more about gamma on the net, and I have
> > reverted to not have X correct the gamma of my monitor any more.  Text
> > looks very good now, and most picures are OK.
>
>  So you're using xgamma -gamma 1.0 ?
Yes.

> > I had to increase the brightness of my monitor quite a bit, from 10 to
> > 60 and decrease the contrast from 60 to 50 (both on a scale 0..100,
> > whatever these numbers may mean...).  Black is not really black any
> > more, it is just dark gray now.  I have not found a procedure to
> > calibrate the settings of the monitor in a context where there is no
> > gamma correction applied.  Any suggestions for that...? [I now just
> > look at it and see if it pleases me....]
>
>  I recommend Poynton:
>
>  http://www.poynton.com/notes/brightness_and_contrast/index.html
Yes...., this is what I had done before and gives good results when you
have the driver correct the display gamma.  If I do not apply the
gamma correction, than everything is much too dark.  This can be
corrected somewhat by using different settings for brightness and
contrast on my monitor!  And that does not maintain black level....!

>  And no, you should not use GRAYS_USE_GAMMA, it is not a correct
> solution.
Yes, I am now convinced that anti-aliassing must be done in a lineair world.


--
Regards,
----------------------------------------------------------------  -o)
Matthijs Melchior                                       Maarssen  /\\
address@hidden                                  Netherlands _\_v
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