Recommendation please for best monopod head to support my Canon 600mm f/4

JohnJ80 wrote in post #13097295
Then I'd do one of the following:

1. Order the QR lever clamp and the RRS lens plate and sell the Kirk plate on ebay. This is the safe bet.

2. Order the QR lever clamp and try it with your kirk plate. If it works, you're good. If not, then order the RRS plate and sell the kirk plate on ebay (or not).

J.

I like the sound of option 1

Ill second that notion. Sell the Kirk, stick to one system, make the system RRS. youll be set for many many years.

the only doubt I would have in doing that is whether the RRS foot would then fit well enough into the Kirk King Cobra gimbal head

If the kirk clamp is a screw clamp it will not be a problem. My understanding is that the main issue with A-S plates from different suppliers than the clamp is in the width dimension in machining and anodizing. The clamps have to have a very precise tolerance on the width. The screw clamps don't have the same requirement.

Markins has a lever clamp too and they pretty much say the same thing as RRS. While theirs is adjustable, they still recommend sticking with the plates of all one manufacturer. Once you adjust it, you still need to have all the plates in close tolerance with one another. I don't think any of the clamp manufacturers have any issue with any plate (provided it's a quality plate) in any screw clamp.

J.

nigpd wrote in post #13100264
the only doubt I would have in doing that is whether the RRS foot would then fit well enough into the Kirk King Cobra gimbal head

If its a screw style clamp, you should have no issues.