That's true, John, in a way. But it's still a little more convenient, that the stopped down measuring is done electronically and the camera (*ist D/DS) remembers the metered value/appropriate shutter speed.
I only use 4-5 "K" or "M" lenses on the *ist D (35, 105, 135, 300, 70-150mm), so it's not really a big issue. My most used lenses are A, F or FA. On the other hand - if the *ist D had an aperture simulator, I might get some more (good) old lenses. Jens Bladt mailto:[EMAIL PROTECTED] http://hjem.get2net.dk/bladt -----Oprindelig meddelelse----- Fra: John Francis [mailto:[EMAIL PROTECTED] Sendt: 29. november 2004 18:32 Til: [EMAIL PROTECTED] Emne: Re: Thanks Guys (135/2.8 A Rating) Kostas Kavoussanakis mused: > > On Sun, 28 Nov 2004, Pat Curran wrote: > > > Thanks to all who responded to my request for a rating of the above lens. > > > > Looks like it's one to avoid; pity as KEH have one rated 'bargain' ($94.00) > > at the moment. > > You can get a K135/3.5 or M135/3.5 easy with that kind of money. If > you add customs and taxes (you are liable to those in Ireland, > right?), even the 135/2.5 may be in reach. > > > It looks like the SMC 'M' lenses very often out do their newer 'A' stable > > mates from what I can see reading PDML posts. > > Not easy to make that generalisation. SMC-A coatings are probably > better for a start. > > > 2) When I upgrade to the * ist D next year, I want to carry over as much > > compatibility as possible with my lenses. > > My understanding of the situation is that what you really lose is Tv > and P modes. If you use them a lot, problem :-) > > Kostas Not quite. That's what you lose if you use a pre-A lens on a camera such as a PZ-1p, an MZ-S, or many other cameras from the Pentax line. On the *ist-D bodies you also lose Av and P modes, and live metering. (in other words: on a camera with an aperture simulator coupling you have something that works rather like an ME series body; on a camera without that coupling you're back to the days of the Spotmatic II).
