Originally posted by Quicksand Maybe so, but there's much more to effective SR than gross movement distance.
The difference might simply be faster processors, better algorithms, and more sensitive MEMS sensors than were available in the A900 era.
I, for one, would lose interest in a Pentax FF that required lens-based stabilization. IBIS is one of the primary reasons I bought into the system in the first place.
I agree. My preference is for IBIS, but my preference does not change that it may or may not be possible.
It is true that there "might" be a way to do it, but right now, given the statement by Pentax, and looking at how much movement there is in the only existing FF IBIS on the market I am inclined be believe that Pentax views this as one of the real challenges they spoke about.
Pentax developed an OIS system and they have shown it with the 90mm HD 645 lens. There is no way Pentax is going to sell enough 645D lenses to recover the development cost of that system in the near future. If Pentax develops a FF K-mount I think it will use the newly developed OIS.
Pentax has not released ANY mid-long fast glass in recent years. Part of that I believe is due to not having an AF system that is accurate enough to handle a DA* 135mm F/1.8, but it may also be because they were developing OIS and they did not want release pro-grade glass without this feature. If the AF in the K-5II is as good as Pentax claims, then they now have 3 of the key technologies to start making competitive professional grade glass again. The 3rd being improved coatings. Now if they will release the key 4th technology being SDM-II.
HD D-FA* 135mm F/1.8 OIS SDM-II Limited
HD D-FA* 85mm F/1.4 OIS SDM-II Limited
HD D-FA* 50mm F/1.2 OIS SDM-II Limited
Those all sound pretty good to me.
Last edited by Winder; 09-27-2012 at 04:44 PM.