Jostein Øksne wrote: > On 9/2/06, Pål Jensen <[EMAIL PROTECTED]> wrote: > >>I really hope for a 400/4. It is about the longest and fastest lens that can >>be hand-held. With the 1,5X multiplication with the DSLR bodies, and perhaps >>an AF 1,4X converter, it would be a killer outfit! > > > 400/4 with SSM would be neat. Can't see any good reason to make it > DFA, though. DA will make it smaller, cheaper and just as good. > > > Jostein >
Actually, the size constraints on a 400 are all in the glass diameter (for a given aperture), format is essentially irrelevant to this, at least until you start talking LF, so there's zero reason to make it a DA lens since it will be the same size anyways. Compare a 67 mount 400mm to the equivalent K mount lens. The essential difference is in the mount (And adjustments for the differing register) -Adam -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
