RE: Depth of field calculations
It feels like you are trying to combine two metaphors..
Common usage of "20-20 vision" is, "perfect vision", which implies,
(this actually is a measurement scale for eyesight)
Common usage of "catch 22" is, "no good choice", or
"it's bad if you do and it's bad if you don't"
)From: Sacha Griffin
)I think its catch 20-20 when its really obvious and you can see it. ;)
)>From: Pat Swovelin
)>> but beware of
)>> diffraction. A smaller sensor demands a smaller CoC, but it also
)>> suffers from diffraction quicker. So it's a bit of a catch 20-20
)>That's Catch 22...
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