I ordered the PXC1 6 Inch Arca-Swiss Type Nodal Rail with Integrated Clamp so that I could create a workaround for something that Canon should have included with the RF 800mm lens. They don't make a tripod collar for that lens, so I "invented" one (sort of) by attaching an L bracket to the lens. It's not ideal, but it works. ProMedia Gear should invent and market one. Hint ;). Now I can use it on my Katrina JR gimbal head. It's not in "perfect balance", but at least I can now use it in a vertical orientation if I need to. It's well made, just like all of their products always are.
I’m most concerned with mechanical function and features. This is the very best in the business.
Top of the line gear. The best in durable camera equipment
I bought the gimbal head, which works GREAT for my long lenses with a lens foot, but then I couldn't use a camera with a regular plate like a ball head. The platform is rotated 90 degrees out. So I bought this and now I can use the gimbal natively and if I want to put a regular camera/plate on, I just put this attachment on the gimbal and can then mount the camera on it. I can also slide it back and forth a bit to find the right balance, or nodal point for the lens. Works great. I bought the short one and it's perfect for my uses.
Love the balance this provides perfect for him R5 and fluid head on 3 legged thing.