Like many, I am really wanting to make the jump to the GH3 from my 60D. The lenses I have thus far-
Tamron 17-50 (Canon)
Canon 50 1.4
Canon 70-200 4 IS
Rokinon 85 1.4 (Nikon)
Tokina 11-16 (Nikon)
I am sure the 50 would not be hard to replace. Any recommendations on a replacement for the Tamron? (Or what would be the best adapter for it?)
My main question though is about the 70-200 IS. Contrary to people saying that you don't need IS for video, I have found many cases when I really enjoy using it. I recently shot this small doc in Japan and was loving having the option to be able to do quick zooms on the 70-200. I had on a monopod with one of the IS options on (can't remember which it was) but it worked quite well. Still able to move and do pans and tilts, have a handheld look, but also be smooth and jitter free at 140mm.
I know there are some canon to m4/3 adapters, but do any of you know if the IS would still work? And I have heard that using adapters doubles the focal length of some canon glass or something? Or is there an equivalent lens I could replace it with?
Thanks for the help guys,