Originally posted by MrApollinax Quick question in regards to the Phase vs Contrast AF. From my understanding both systems still struggle in low light or low contrast situations. Is the question weather or not both will be available in the next camera? Phase Detection for the OVF and Contrast Detection in Live view? Or is it a question of choosing one over the other because one variant is better than the other?
Well, the first one who posted about contrast detection auto focus was saying that both would be available. He also said that in order to make CDAF fast enough to be viable the speed of the auto focus motor in new lenses would have to be significantly improved. This would in turn make them significantly faster when used with phase detection auto focus.
In short, he said that the new camera when used with the new lenses would feature:
Contrast detect auto focus at a similar speed to what we see now on Pentax cameras
Phase detect auto focus at a much faster speed than we see now on Pentax cameras
When used with old lenses:
Contrast detect auto focus would be unavailable or painfully slow
Phase detect auto focus would remain pretty much as it is now
At least, that was the impression I got from what he said. I also don't know how much of this is a guess and how much is inside info.
Regarding the patent application. I haven't read even close to the whole thing, but it looks like it is for lenses that could be used on two different mounts without an adapter by having an inner mount ring and an outer mount ring. This could be for anything. It seems like it may be the source of (or possibly confirmation of) the rumor that there will be lenses that can be used on either the 645D or K mount SLRs. On the other hand it could be for an entirely new mount along with one of the existing ones.