The B + W filter is actually only turns the filter and not the MagFilter on the metal ring. The holder is also working properly so that even frequent changing of the filter (I use it on 35 / 50mm Nikkor lenses) works fine and without tilting.
The camera is thus naturally quite thick, so it no longer fits in my camera bag, but the filter is easy in the included neoprene sleeve in your pocket stow.
I'm not sure, but I think the camera's battery keeps the filter no longer screwed as long as before. We had the camera as a second camera in our Asia vacation here and felt she went 20-30% earlier than empty without attachment. I can imagine that the engine has due to the higher weight to work a little more. Have this test done but no - that's why more chargeable to vague conjecture.
