Originally posted by normhead There are a number of issues with using Pentax lenses on Sony Cameras. One being that they'd work better on a Pentax camera and native mount. I mean really, a Pentax FF is coming, what's the rush?
First, Pentax FF is still vaporware.
Even if it is true, who knows when it will come out. The rumor has it sometime next year - but as with any project, it can slip and may not come out until 2015 or later (see Watch Dog). Or it can even be cancelled (say like redesign to be a mirrorless)
And when it comes out, I bet that it is going to be quite a bit more expensive than A7, more like in the $2000 range.
Native Pentax camera may work better with Pentax lenses, but Sony would open up your options of using Canon and Nikon or whatever lens you may want.