« on: April 16, 2013, 07:07:13 PM »
Slightly off-topic but important:
...there are heads/clamps which don't fit between the gripped 5D3 body and the head attachment. I have the 300 f4 and the 70-200 f2.8L2 and know that for instance, my Manfrotto 322 grip head with the RC2 plate will not fit up under the 70-200 because the bulkiness of the battery housing. I have to try the same combo with the 300 but suspect I'd see the same problem. I have an aftermarket grip but I think its shape will not differ too much from the Canon offering.
I am planning a change to all Arca Swiss (AS) camera attachment so am thinking about this right now, too. I plan to adapt all heads to the AS clamps, even retro fitting somehow the AC system on a Manfrotto 410 geared head. I will have to figure out how to replace/adapt the 322 grip, too, but I knew the inability to attach the 70-200 required some new solution, anyway.
I have an 322RC2 head - the 70-200 f/2.8 IS II + gripped 5D3 (I use the Canon BG-E11 grip) does in fact fit - after installing the RC2 plate to the lens collar, you need to rotate the tripod collar on the lens (ie, as you would if you were shooting vertically), then attach it to the tripod head, and then rotate the lens collar back in place - boom, it fits with your gripped camera. I had the same issue with my gripped 7D, too.
Regardless, I am very happy to have moved on to the RRS AS-style plate system - big improvement versus the manfrotto RC2 system.