Originally posted by IchabodCrane If a 1.05 crop is not needed then great. I only threw that out there in response to the mountains of speculation around K-mount / FF / IBIS not being mutually achievable, at least not in a high quality way.
I suspect it is the old bugaboos about
:
1) IBIS requires a physical and electronic framework perhaps eating some space in the box. The A99 is large body, but then again, that EVF module is HUGE, as are a lot of the EVF modules on the a-mount cameras. Still, the 645D has in-lens stabilization.
2) IBIS is excellent at wide to medium ranges on par or better than in-lens, but at longer FL's (70mm+) in-lens has a measurable edge (which itself appears to make for some beefy Canon and Nikon IS/VR equipment). IBIS deals with legacy glass.
It is difficult to tell if IBIS is the FF roadblock. IMO I doubt it is a roadblock so much as being less effective on larger sensors and longer FL's. There may be form factor issues as well.