by "joe mama" <dmoss74@[EMAIL PROTECTED]
>
May 24, 2007 at 03:16 PM
"Richard Polhill" <richard.news@[EMAIL PROTECTED]
> wrote in message
news:37126$46560064$3e18e6cb$5627@[EMAIL PROTECTED]
>>
> Take the diagonal of the frame, so pythagoras says: ?(x²+y²).
>
> 5"x 4" = 127mm x 101.6mm which has a diagonal of 162.64mm.
>
> 6 x 9 has a diagonal of 108.17mm.
>
> Crop factor is therefore 1.5x or ?x. Your guess was spot on.
thanks for the answers, and a small pat on the back--pesonally--for the
guess ;=)
