" "Dave Moorman" wrote in message
]...
Is the other part of that rule of thumb that you set the exposure time
for 1/the lens length? I.e., if you're using a 75mm lens, set the
exposure time 1/75 (or as close as you can get).


While not affecting actual exposure, this is a good rule to follow to avoid
camera shake with telephoto lenses-use the focal length as your slowest
shutter speed.
jim