dadiOH wrote:
> joe mama wrote:
>> 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.
>
> Easy...
> The 203mm becomes - ready? - exactly 203mm. Et cetera for any others
>
>
Yes but he didn't ask what the focal length became, but what the
"effective" focal length was. The subject said "crop factor".
Smartass! ;-)
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