On Tuesday 06 February 2007 05:40, Tim wrote: > On Mon, 2007-02-05 at 18:31 +0000, Anne Wilson wrote: > > I'm not disputing anything of what you've said, Tim, but there must > > also be something relevant in the way that an application handles the > > data. My webcam can produce quite acceptable colours in ekiga, but in > > amsn everything has a blue/purple tint. Since the only thing that is > > not common to the two situations is the application, it has to be > > there that there is a problem. That's why I wanted to find some way > > of changing the balance. > > Hue/tinting as I described was a composite video adjustment, to acheive > similar effects for other camera types, you'd need the software to > provide you with the appropriate controls. It looks like they don't. > Brightness and contrast work well, but no, there's no appropriate colour control. > Often webcams will do some sort of automatic white balance. You can see > some of them flicking back and forth between presets when images are out > of range, or when they get confused by coloured scenery. :-( > > You could always try the photographic approach: Try putting some yellow > cellophane over the lens. ;-) > Hmm - I wonder how many sweets I'll have to get through to find a yellow cellophane wrapper? :-) Anne
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