Of the three pictures on this page (after all, there are three Guardians at Sculpture Ranch), can you tell which is the single film shot? (answer below)
First, here's a hint from the Olympus website. They made my C-4000 camera as well as high-end medical imaging equipment.
"Repeating (CCD) subunits consist of four photodiodes arranged in a square and masked with one red, two green and one blue filter, corresponding to one full color set. Two green filters are used because green is at the center of the visible wavelength region and the human visible response reaches its maximum here. In higher resolution cameras the second green filter in the matrix is often replaced by a teal (blue-green) filter."
immediately above is the film shot, with redder reds and less green