hi,
just as is the case with digital, i am trying to work with a crop factor,
but can't figure the math. i have a 4x5 camera that has a 6x9 reducing
back.
my lenses are 203mm, 127mm and 90mm. what i am trying to fiure out is what
"effectice" focal length they become when using the 6x9 back. i'm guessing
somewhere around 1.5, but i don't know what to divide, or multiply. i'm
assuming you take the overall square footage, teh divide the 4x5 into 6x9
and get the CF. does that make snse???
any help would be great.
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