Photography by Charles Platt
LEFT: This picture was scanned
from a 4× 6 photo from a cheap
processing lab that pushed the
colors to the max.
CENTER: If you convert to monochrome mode in Photoshop (or in
your scanner), the results are drab.
RIGHT: Using a red color filter, you get
something much more interesting.
(A speckled sky will result from the
red filter discriminating between
slightly different hues of blue.)