In article ,
Whisky-dave says...
fortunately that insanity is no more, as digital is consistent shot to
shot for the life of the camera.

doesn't help if you have more than one camera though.

The difference in ISO is actually not a problem, because the camera
automatically sets the exposure and in manual mode you can determine the
right exposure by judging the histogram.

I was just curious how ISO could be measured. Got some feedback, but
isn't there a scientific definition, e.g. "100 ISO is the camera
sensitivity for which at an illumunance of ... lux the camera chooses
an exposure of ..." - something like this.
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
http://tech.groups.yahoo.com/group/MyOlympus/
http://myolympus.org/ photo sharing site