> I'll take that one step further: be it a display button or not, any method of
> reducing the brightness that is not seperate from the available 256 levels per
> channel controlled by the videocard will lose levels as brightness is
> decreased via this method. Any method that has its own 10 bit or higher
> 'cache' (preferably 12 or higher) to use in adjustment can compensate for this
> and avoid visible banding. Any method that is analog, like backlight
> adjustment, transcends this limitation. So the way to find out if a given
> control can reasonably used for this purpose is to reduce it to an extreme
> degree, and see if visible banding occurs; if so, it is probably sharing
> levels with the videocard LUT adjustments, and you probably don't want to make
> major luminance adjustments there.
>
> C. David Tobie
Thank you C.D.
Roger Breton | Laval, Canada | email@hidden
http://pages.infinit.net/graxx
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