Originally posted by lytrytyr Except for the pentaprism,
what you say about the K-01 here
is what people have also said about the K-1.
I was using a Tamron 17-50/2.8 on DSLRs when I bought the K-01,
and the CDAF on the K-01 was the only way to get the Tammy
to focus properly at the wide end.
So I cannot agree with your comment on the K-01's autofocus.
It's not fast, but it's accurate.
The K-1 II is in a whole different category. Not sure if you have used it, but it has the fastest auto focus any Pentax camera I have used. Frame rate is 4.5 fps, which is significantly better than the K-01 when it is shooting RAW images. Not sure what kind of buffer you got with the K-01, but I could shoot a burst of three RAW files followed by a 2 second or so pause while those images were written to the card. You could also use single shot mode which basically required buffer clearing after each shot.
I don't own any Tamron lenses, but my guess is that they would actually function better with the live view of any modern camera (K3, K-P, K-1) compared to the K-01. My lenses all functioned worse on the K-01, particularly the DFA 100 macro which was basically unusable, except in manual focus mode.
I sound like I hate the K-01, but I'm a Pentaxian and I can make most things work, as long as the image coming off the sensor is good. For landscape, I enjoyed it a lot, but I just think it's (lack of) functionality compared to other cameras on the market, combined with its high release price, explained its failure.
(Pentax K-01 with FA 31)