In practice, the 'Green Button'/AE-lock hack on the DSLR's is simple and easy to use. You always set aperture on the lens for non-A lenses, and either hit the AE-Lock (Green Button on D/K10D) and it immediately sets an appropriate shutter speed or you use the DoF preview to get a metering readout. I usually do the former and it works very well.
Av mode is usable with adaptor-mounted glass (since that is stop-down on any K mount body and doesn't have the aperture coupling either) or wide-open with pre-A glass. The latter is surprisingly useful for a serious low-light shooter like me. Frankly working with MF glass on the K100D is less hassle than using the same glass on my MX (Or any other purely manual body). -Adam David Bliss wrote: > Hi all, > > I'm new to the list but I've been reading the archives for the last few > weeks so hopefully I will not make too much of a fool of myself. I'm a long > time amateur user of Pentax 35mm film gear about to buy my first DSLR. I was > minutes away from buying a K100D when the K10D was announced... > > I have a lot of manual-aperture K-mount glass, so being able to use it on > a new DSLR is important to me. I know there are workarounds for using > such on the K100D but they're pretty bad (metering on DOF-preview only > and/or manually setting aperture to match the lens's). > > The dpreview page (http://www.dpreview.com/articles/pentaxk10d/page2.asp) > and a few other verbatim copies thereof explicitly says > "Ability to use lens aperture ring" so I was very excitted to think that > Pentax would have finally fixed this (idiotic) design error on the K10D. > > But, the press photos of the K10D clearly show an absence of a mechanical > aperture coupling lever. And the (mis)released manual from a couple of > days ago documents the same behavior as the K100D. Can anyone confirm > this for sure one was or the other? > > Also, can anyone explain to me why the K100D (and apparently the K10D) disable > (a) non-central AF sensors (for focus confirmation, not AF, obviously) and > (b) all the metering modes except CWA when using a pre-A lens? I cannot > conceive of any possible reason these features would care about the lens > aperture being set manually. > > Thanks! > David Bliss > > -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net
