by Richard Polhill <richard.news@[EMAIL PROTECTED]
>
May 24, 2007 at 10:44 PM
David Nebenzahl wrote:
> Remember that the lens needs to cover at least the diagonal of the
> format, meaning a circle which encloses the entire frame, and then some
> to allow for movements.
>
>
That's not really an issue as he's trying to work out the crop factor
against his existing LF lenses, which presumably have a covering power
for at least 4x5" plus room for movements, I'd guess at 200mm.
