Having very recently decided to consider a digital body for my manual KA lenses, I've ranged from considering a (new) K20D (expensive) to a *istD without being able to see clearly what benefits or disadvantages might apply to any of the models, even (or especially) after reading
Digital SLR - PENTAX U.K. Limited .
My enquiry to this forum was compiled and ready to be unleashed, but two threads (this one and
https://www.pentaxforums.com/forums/pentax-dslr-discussion/32380-looking-olde...cheap-2nd.html ) have answered most of my questions, apart, perhaps, from reliability, battery life, and the effect of a pentamirror instead of a pentaprism.
To me, shutter delay is important (as is speed of focus, although I will almost exclusively be using manual focus KA lenses). I also value 'continuous' shooting, rather than having to wait while the exposures are written to memory as much of my photography involves aircraft displays.
Oh, and I see that only the K20D has an X synchronisation socket for flash.
In summary, I am left with the impression that almost
any of the digital models will be just fine (especially for use with manual focus lenses).
Now I will just have to see what is available at what price(s).
(All my equipment, apart from a Cobra D650 flashgun, has been bought secondhand from stores. Anybody know if the Cobra D650 can be safely used with any of these models?)
Just a final question - are the latest models significantly better (focussing response and definition) than the original *ist models?
Is it worth paying megamoney for a 14Mp CMOS?