Picture Brightness on Windows

Scott Rossi scott at tactilemedia.com
Fri Oct 25 14:56:01 EDT 2002

> Thanks for the responses everyone.  The possibility of using different
> graphic worlds seems to be the most likely problem based on the
> problems we are experiencing.  Seeing as on my Windows machine the
> images look the same in all applications whereas on another windows
> machine different applications display the images darker or lighter
> than in other programs.
> A way to fix the problem would be to have some sort of gamma or
> brightness slider but from what I have read in the archives there
> doesn't seem to be an easy way to make such an adjustment slider.  Is
> that true or has anyone come up with a method for doing so?

Just a second opinion...  If you're trying to sync up displays in a single
location (ie your office) then this might be worth attempting.  But
otherwise, I would say you're probably chasing your tail.  In addition to
overall gamma, you will have to contend with monitor-specific
brightness/contrast settings, not to mention the fact that some people don't
even know how to change the number of colors displayed (256 vs 16 or 24 bit)
or even that they *can* change the color depth.

In any event, you can do some hacked display manipulation using a
translucent image object (white, black or grey) and changing its blendLevel.
There are also ink effects that can be employed to achieve other color mix
variations.  Off hand I would guess that a brightness slider would display a
translucent white overlay for values from 0 to +100, and black for 0 to
-100. With some experimentation, you might be able to achieve what you need.


Scott Rossi
Creative Director
Tactile Media, Multimedia & Design
E: scott at tactilemedia.com
W: http://www.tactilemedia.com

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