Quote Originally Posted by Pere Casals View Post
Well, in fact when I suggest "pulsing the laser intensity in two levels, chopping/buffering the signal for the two levels and sending it to two separate A/Ds for each channel." this is a Multi-Exposure (dual) system in a single pass,

You would make two short laser shots, buffering+chopping the signal very fast (two time per pixel) while allowing the converters a full pixel clock time interval to make the conversion.
I guess they are all variations on the same theme. i.e. bringing the voltage variation into the best range of the A/D and ultimately the bit buckets you have available to fill.

Possible problems with a laser I guess would be finding one with a sufficiently broad spectrum, or calibrating it, or maybe not if you carefully calibrated it to match the emulsions, etc. But with the later you would be digitally simulating the color cross talk engineered into the emulsion. So maybe you be better off with just a digital camera...