I'm sure some of you optics experts can help me here. I was making a feeble
attempt at
shooting a self portrait by shooting my reflection in a wall mirror with the
135 mm lens.
While focusing I noticed a unique phenomena which puzzled me a bit. I was
standing about 6
feet from the mirror. While I was in focus, objects a few feet behind me (in
the mirror)
were not. I would think that since the mirror is a flat surface all of the
objects in this
reflection would be on the same distance from the camera, hence be in focus.
I've never
thought of this phenomena before. I guess the mirror is only acting a bounce
off plane so
that the actual optical distance would be the twice the distance to the mirror
(the true
distance of the travel of light). I'm sure this goes by some fancy name. Am I
explaining
this correctly?
Also are any of you experieced at shooting self portraits into a mirror? I
know it is a
strange thing to do, but it seems interesting.
Phillip Franklin
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