Very hakelig and firming

On my Zuiko 40-150mm (R) I can this panel only with the greatest effort touched down. She tilted slightly and then goes only with a good dose of violence again. Even if you manage a lot of patience, just put on the panel, you need too much power and I have every time afraid to damage the lens. Touched down reverse is even more difficult than forward.
The big advantage of a bayonet bezel is actually exactly the that you simply screwing and unscrewing can with one hand. With this panel we have this advantage certainly not, in my opinion, this panel is only suitable for people who always just leave it. However, you can then no lid on, because the aperture it is too narrow and the lens is then very long, so that's not really a realistic alternative.