In a message dated 12/25/2004 2:52:07 AM Eastern Standard Time, wildimages@xxxxxxxxxxx writes: Looking at the replies it seems it was accurate. For me, I'd always thought it was the amount by which you could over- or under-expose film and still obtain an acceptable end product ****************************************************************************** *** Latitude originally meant how large a brightness range of the original scene you could record on film. It was measured in number of stops. A Stop equals .3 log density.