Rebekah wrote: > so if a sensor is right where two film grains meet with very different > colors or values, what does the pixel do? Does it choose one color or > the other, or does it appear as an everage between the two?
Well, "it" averages. But the thing doing the averaging isn't the pixel or the sensor, it's the optical path between the film and the sensor. The light arriving at that sensor pixel is some sort of average (geometric? quantum? something) of all of the grains that were in between the light source and the sensor pixel in question. That's why the colors change and the pixels look like speckles. There can also (in some emulsions) be spaces in between the grains that can affect the averaging and the resulting color. -- Thanks, DougF (KG4LMZ) -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
