Pentax China Confirms FF DSLR and Pro APS-C body

Started Apr 25, 2013 | Discussions thread
MightyMike
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Re: Pentax China Confirms FF DSLR and Pro APS-C body
In reply to T Evergreen, Apr 25, 2013

T Evergreen wrote:

Since we're all speculating, I'm thinking that Pentax is looking at all of those legacy lenses out there and developing a camera that auto focuses by moving the sensor back and forth rather than moving lens elements, similar to what the Contax AX did back in the late 90s.  That would make even M42 lenses auto focus.  Lenses with long throws would however require some prefocusing.

Its a neat idea but with serious flaws... this would have to be CDAF and semi-manual focus otherwise the mirror would get in the way and you wouldn't be able to see an in focus image before shooting. also the limited range of sensor movement will force semi-manual focus especially with lenses the extend a lot to obtain focus at close range.... actually the majority of the movement would be backwards into the body meaning no room to go to get any decent focus.

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