Op Ma, 25 juni, 2007 09:57, schreef mike wilson: > >> >> From: Frits Wüthrich <[EMAIL PROTECTED]> >> Date: 2007/06/24 Sun PM 09:24:02 GMT >> To: pdml@pdml.net >> Subject: Re: what's the difference between M and A? >> >> Don't know about K lenses, but the M lenses I had, the 50, 135 and 200 >> mm >> didn't need stop down metering on my MX camera's, or the ME or ME super. > > _Nobody_ who is _anybody_ talks about film cameras these days. 8-)
So I stand corrected. Frits Nobody. There are those moments I suddenly feel really old. > > I was referring to DSLR use, as that is what 90%+ of the list traffic is > about these days. Well, the photographic part of the traffic, anyway..... > >> >> On Sunday 24 June 2007 22:17, mike wilson wrote: >> > Vic Mortelmans wrote: >> > > Hi, >> > > >> > > OK, obviously I do know that A-lenses have an A-modus, allowing the >> > > camera to set the aperture (shutter-priority modes), while M-lenses >> > > always require the aperture to be set on the lens. >> > > >> > > But being in persuit of a 50mm f/1.4, I notice that the A-model is >> > > priced at least twice as high as the M-model, if not more. >> > > >> > > Looking at the mechanics of the diaphragma, I wonder if an A-lens is >> > > that different, apart from the electronic contact that probably >> doesn't >> > > do anything more than telling the camera whether the A-mode is on or >> off. >> > > >> > > And I also assume that the 50mm f/1.4 M and A are optically >> identical? >> > > >> > > So is there any objective reason for the price difference, or is it >> just >> > > the game of demand and available quantity that sets the price? >> > >> > You got the reason in the first paragraph. M and K lenses need the >> > non-standard use system of pressing a button to take a stopdown >> exposure >> > reading before each shot. A lenses seem to have more plastic parts in >> > them and are alleged to be not built as well as previous series. >> >> -- >> Frits Wüthrich >> >> -- >> PDML Pentax-Discuss Mail List >> PDML@pdml.net >> http://pdml.net/mailman/listinfo/pdml_pdml.net >> > > > ----------------------------------------- > Email sent from www.virginmedia.com/email > Virus-checked using McAfee(R) Software and scanned for spam > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > > -- Frits Wüthrich -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
