I sometimes make contact sheets, but only for the victims of my photography. Evaluating the negative is more valuable. Ansel Adams said something like, "The negative is like the score to a piece of music; the print is the performance." If someone can't read the score or the negative, they probably can't do a good job of the music or the print. Remember, deafness began to afflict Beethoven halfway through his life. He could still compose, and read the scores of others, and hear the music inside his head. What grand music he wrote while deaf! We should learn to previsualize our prints even before tripping the shutter. Contact sheets may be useful in cataloging, though.
