I use B+W 82mm Slim MRC UV Filter for my 16-35 f/2.8 L II & 24-70 f/2.8 VC lenses.
The problem with that filter is that you cannot use the regular lens cap as the slim filter does not have any threading ... B+W does provide a lens cap but it keeps falling off all the time.
So my question is that do any of you use a lens cap for 82mm slim filter and does the cap stay on securely? if yes, please give me the brand name or better yet a web link where I can buy it online.
Thanks in advance.