Soooo, you are saying you have adjusted the monitor already... not the assumed_gamma
alone?  Sounds like you have something very much like my old DELL 486SX33 (or was it
33SX486... no matter).
That thing was dark when I turned the brightness up full, minus a fraction to prevent
distortion.  Contrast too, I could never get a good screen.
Once I knew about it, just as you have found, all I did was to try and render
everything
darker.  Once I had a new computer with monitor I saw washed out images galore of all
my
previous ray traces.  Awful.
The thing you'll be having trouble with is to see things good AND for others to see
them
well also.  Can't be done unless you keep switching things around.
Think you're going to have to guesstimate about it.  Simply reason the renders to need
darkening and more contrast.  In POV terminology, less ambience and more gamma
(meaning
in POV, more).  The Povray.ini (master INI) file can be set to have a starting point
for
gamma as well.  Display_Gamma=2.2 for PCs or 1.0 for Macs for example (no command-line
equivalent).  As to what exactly will be the right setup would require you view the
renderings with another monitor for comparison probably.
Don't know what else I can say.  Perhaps people here have more to say (and know).

Bob

"The "D"" <the### [at] netzeronet> wrote in message
news:3931fc72@news.povray.org...

Kari Kivisalo <kar### [at] kivisalonet> wrote in message
news:392FE712.F9B5A13B@kivisalo.net...
> assumed_gamma and Display_Gamma in master povray.ini work together
> to produce consistent results when the file is rendered in
> different systems. It does not help correct color communication
> in image files between systems.
>
> The image data is gamma corrected by Display_Gamma/assumed_gamma.
> If there is no assumed_gamma image data is not touched. In new
> files assumed_gamma should always be 1.0 if it is used at all
> because it's there to match old scene files with Display_Gamma.
> You would set assumed_gamma the old display's gamma. This way
> the "gamma correction" that was built in the old scene file
> cancels out when POV applies the new correction.

Ok this is basicly what the manual said about it (which I don't completely
understand).
I asked mainly to see if assumed_gamma affected the gamma if the resulting image as
well
as the image that is displayed (in my case via the win32 pov engine with out any work
needed on my part) by the +D option. My moniter is old a decripit and it requires a
gamma correction of 1.85- (according to terragen's gamma adjuster which seems so far
to
be accurate). Is there a way to adjust the gamma for my monitor with out making the
image too bright on newer/better monitors. I'm making a web logo so this particular
scene (and other various web graphics I happen to make) so the scene isn't likely to
be
re-rendered by anyone else.

> Use http://www.povray.org/binaries/gamma.gif to find the correct
> Display_Gamma.
>
> Use http://hammer.prohosting.com/~kkivisal/adjust.gif to correctly
> adjust monitor brightness and contrast.
>
>
> There is a proposed standard for RGB images that is backwards compatible
> ,excellent for Internet and enables other people see your work of art
> the way you intented.
>

And just when will the proposal be finaized and by whom? That will be a great thing
when
it's done (hope some one like iso, w3c, or ansi does it they've got the most
experience)



--
-The Developer
    "Hope is the last to die.......unlike the ICQ flower

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