So, here's the question: Does auto focus need some contrasty item
on which
to focus. If, for example there were two solid colored objects one
behind
the other, and I wanted to focus on just one of them, say the
closer of the
two, would the focus work properly? I'd like to try out the lens
while the
camera is still available to me.
...
Oh, does the auto focus work in low light, say at dusk, or at night?
It depends very much on the camera itself and on the specific kind of
subject in the viewfinder, the light levels, etc. Overall, AF can
lock in pretty easily on *most* things and has trouble with *some*,
and it depends what the situation + body + lens is for particular
behaviors.
Of course, if it fails to lock in consistently under poor light or on
the subject matter you want to photograph with the body you're
getting, flip the switch and focus manually.
Godfrey
