I do, as Pentax uses as many systems across camera lines as possible to keep costs down. The metering and auto focus electronics in the 645n were probably, (I only say probably since I've never taken either camera apart, though if someone would like to send me a 645n to sacrifice I'll be happy to compare it's electronic guts to my not economically feasible to repair MZ-3), the same modules as those in the MZ/ZX-5n. I expect the 645D to share the autofocus electronics and metering with the K10D. If they do that, and I have every confidence Pentax will, full aperture metering with 67 lenses is dead as the dodo.
Thibouille wrote: > Ah I didn't know. That said, I don't expect Pentax to drop support for > this in their Pro line. > > 2007/2/27, P. J. Alling <[EMAIL PROTECTED]>: > >> All 645 lenses are A lenses and are electronically identical to to the >> Pentax Ka lens mount. There is no 645 equivalent to a K lens but I >> would expect that the 67 lenses would fill that niche. Remember Ka >> lenses are supported by all Pentax K DSLRs but using the aperture ring >> for full aperture metering isn't. >> >> Thibouille wrote: >> >>> If the adapter provides the linkage then 645D should meter normally IMO. >>> Pentax stated that 645D is compatible with all 645 lenses and the >>> DFA55 is announced as being compatible with previous 645 bodies (and >>> it has an aperture ring). >>> >>> So it should (hopefully) be OK. >>> >>> 2007/2/27, Mark Roberts <[EMAIL PROTECTED]>: >>> >>> >>>> P. J. Alling wrote: >>>> >>>> >>>> >>>>> Mark Roberts wrote: >>>>> >>>>> >>>>>> Paul Stenquist wrote: >>>>>> >>>>>> >>>>>> >>>>>>> On Feb 27, 2007, at 3:58 AM, Thibouille wrote: >>>>>>> >>>>>>> >>>>>>> >>>>>>>> Mmm BTW do 67 lenses provide mecanical coupling when >>>>>>>> used on 645 with adaptor or one you them like M42 on K body ? >>>>>>>> >>>>>>>> >>>>>>> When used on the current 645, using a 67 lens would be akin to >>>>>>> using an M42 lens on the Pentax digitals. >>>>>>> >>>>>>> >>>>>>> >>>>>> A little better than that: The 67-645 adapter does provide >>>>>> automatic diaphragm actuation and open aperture metering. At >>>>>> least according to the Pentax literature. I'd love to buy one of the >>>>>> things if I could ever find one. >>>>>> >>>>>> >>>>>> >>>>> But will it offer open aperture metering on the 645D? >>>>> >>>>> >>>> Impossible to say without having a 645D to play with, don't you think? >>>> But I'd be surprised if it didn't. >>>> >>>> >>>> -- >>>> PDML Pentax-Discuss Mail List >>>> [email protected] >>>> http://pdml.net/mailman/listinfo/pdml_pdml.net >>>> >>>> >>>> >>> >>> >> -- >> Entropy Seminar: The results of a five yeer studee ntu the sekend lw uf >> thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot. >> >> >> -- >> PDML Pentax-Discuss Mail List >> [email protected] >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> >> > > > -- Entropy Seminar: The results of a five yeer studee ntu the sekend lw uf thurmodynamiks aand itz inevibl fxt hon shewb rt nslpn raq liot. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
