Brightness, Contrast, WB settings

I've been toying with the various settings in Scott's ultra-groovy
QuackCam driver, and they act in weird ways.   The code is doing an atoi,
but 128 might be just right, 129 a little ligther, and 130 completely black.
Weird.  Anybody else getting this?

Scott-  At this point, you aren't just the man of the hour, you are the
man of the year!  An plans to license "Java(TM) Technology" any time soon?
The NYT and uSoft are quite interested... :>

  Adam Seligman