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RE: filmscanners:What is Analog Gain
> In case it might be of interest, here's the text from my LS-30
> Nikonscan manual (pdf file):
> Analog gain is used to adjust the intensity of the scanners light
> source, emphasizing selected colors in the input image. The
> controls for analog gain consist of four sliders: a master slider
> that allows the user to increase the brightness of all LEDs in the
> scanners light source simultaneously, and red, green, and blue
> sliders that allow independent adjustment of the red, green, and
> blue LEDs.
> Moving a slider to the right increases the intensity of the affected
> LED; moving it to the left decreases the intensity. Click
> the Help button for information on using analog gain.
> Note: Setting the intensity of the scanners light source too high
> may produce smear or other defects in the scanned image.
Thanks! That makes perfect sense. Typical illumination for a scanner isn't
variable...but with the Nikon LED system, it's easily adjustable (though
linearity has typically been a problem with LEDs, but probably not in the
range that are required for scanner use).