Thank very much for this. So am I right in assuming this is what I need:
JRB 170 Rotating Platform - $180
Tripod Quick Release kit - (Top & BasePlate) - $60
CANON 70-200 Lens Mount - $50
Wilt wrote in post #7755679
If you go the Newton web site, there is a phone number to talk directly to Robert Newton who is very accomodating and provides very detailed discussion of the bits and pieces to fit your particular circumstance. He makes superb products, and is very free with advice.
I actually emailed him, and he responded very quickly. His concern was my 70-200 f/2.8 which has a collar. He think that the lens is going to damage the body if you use the body to hold it up. The 70-200 is my main lens in studio so I'll have to see if there is way around it. I much rather give him my business than a corporation.
Pinto wrote in post #7756014
Have you thought about a L bracket? I realize you'd have to dismount, which you indicated you did not want, but it's not very laborious.
Yes, although the RRS L bracket is very nice (seen their video on how easy it is), I think this would be a better solution as you can go back and forth on a shot by shot basis. It really was my backup choice in case the $500 and $800 prices were the prices. I may still end up with it. I'll call Rob on Monday to see what he can offer me if I were to exclude the 70-200.