Hullo. My name is Paul and I'm a new user.

I can't get my head around this display_gamma thing. Using the pic & stuff
in the Help, I keep getting a match on 2.8 to 3.0 - that can't be right, can
it?

Has anyone got any different way of finding display_gamma (or explaining
what I should be doing to find it), that's probably all I need.


Thanks
Paul
:o)

Post a reply to this message

Paul Mc wrote:

> Hullo. My name is Paul and I'm a new user.
> 
> I can't get my head around this display_gamma thing. Using the pic & stuff
> in the Help, I keep getting a match on 2.8 to 3.0 - that can't be right, can
> it?
> 


Depend on your monitor and video card (some have correction for gamma, 
which may worsen thing if applied in the wrong direction!).

My office monitor is far more than gamma 3 ! (in fact the red, green and 
blue gamma are not identical for it, but I use the correction from the 
video card, which allow to split the gamma setting, to get a single 
value for povray.)

Best check so far I have found is to render the povray portfolio, on the 
  stone1.inc third html page (3 of 14), you should look at T_Grnt15 and 
T_Grnt17. If povray & your computer gamma are not correctly set, you 
will only see black images. Whereas, once correctly tunned, T_Grnt15 is 
pattern of dark black and lighter purplish strock of grey, and T_Grnt17 
is a mix of dark yellow, green and blue (both skyblue and navyblue).


> Has anyone got any different way of finding display_gamma (or explaining
> what I should be doing to find it), that's probably all I need.
> 
> 
> Thanks
> Paul
> :o)
> 
> 
> 
>

Post a reply to this message

Thanks for that, Le.

I'm still not 100% sure if I know what I'm doing here though. I've stuck a
couple of test images up on my (otherwise empty) home page -
http://homepages.ihug.co.nz/~paulmc/gamma.htm
if anyone feels keen about having a look and telling me what they think it
would be appreciated.

One (quite possibly) brilliant, or (most likely) silly, idea I have had is
rendering a file off the IRTC CDs with different display_gamma's till I get
it looking the same as the pic on the CD - would that work do you think?


Thanks for your time
Paul
:o)


"Le Forgeron" <jgr### [at] freefr> wrote in message
news:3DB### [at] freefr...
> Paul Mc wrote:
>
> > Hullo. My name is Paul and I'm a new user.
> >
> > I can't get my head around this display_gamma thing. Using the pic &
stuff
> > in the Help, I keep getting a match on 2.8 to 3.0 - that can't be right,
can
> > it?
> >
>
>
> Depend on your monitor and video card (some have correction for gamma,
> which may worsen thing if applied in the wrong direction!).
>
> My office monitor is far more than gamma 3 ! (in fact the red, green and
> blue gamma are not identical for it, but I use the correction from the
> video card, which allow to split the gamma setting, to get a single
> value for povray.)
>
> Best check so far I have found is to render the povray portfolio, on the
>   stone1.inc third html page (3 of 14), you should look at T_Grnt15 and
> T_Grnt17. If povray & your computer gamma are not correctly set, you
> will only see black images. Whereas, once correctly tunned, T_Grnt15 is
> pattern of dark black and lighter purplish strock of grey, and T_Grnt17
> is a mix of dark yellow, green and blue (both skyblue and navyblue).
>
>
> > Has anyone got any different way of finding display_gamma (or explaining
> > what I should be doing to find it), that's probably all I need.
> >
> >
> > Thanks
> > Paul
> > :o)
> >
> >
> >
> >
>
>

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