-----Original Message-----
From: Daniel J. Mitchell
>>> But I'm still not sure why it is that the 50mm lens is the fastest -- is
it
>>>just that there's not the demand for a $100,000 300mm f1.2 lens?
Not many people would be able to lift a 300/1.2 lens, as it would probably
weigh about 250 pounds.
>>>Is it just
>>>the case that 50mm lenses happen to match up to 35mm film in a
particularly
>>>handy way to allow making fast lenses at that size without it being too
>>>expensive?
Basically correct.
Jim
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