I have recently purchased an RF 100-500 lens and am very happy with its performance so far. However, the tripod ring does not seem to tighten sufficiently to prevent the lens/camera from rotating. Any advice/solution would be greatly appreciated.
My collar rotated from day 1 and instead of sending the lens and collar back to Canon and being without it for a week or so I added thin 3M foam strips. This completely solved the issue with no movement at all just like my 70-200 and 100-400 lenses.
Thanks for the response and the pictures. I am familiar with the spring action of knob. There does not appear to be any damage on either side and the ring seams to line up properly on the lens when attached. I have tried several times to remove and ...
