The annoying up and down the original cover with this lens cap is eliminated. The constant question what to do with the part? Who it has times, do not want to miss him. Compared to ALC ALC LX7BK LX7B this is a bit thicker and you can do it even with a patch Filterdapter and filter use. The cover with the number ALC LX7B is for no more than the filter adapter without filter or suitable for the camera without a filter adapter. The assembly with the bayonet lock is relatively simple when you know how it goes. So do not screw it turn only a slight pressure! A tailor-made camera bag you can not use then of course. Highly recommended would be here about the dehydrator Yuma XS. This fits the camera with the automatic cover pure.