Too bad that some users do not have the desired effect

But as it is always so beautiful in the rest IEGT the force! Had put on a 77mm skylight filter accidentally a 77mm pole filter. When I noticed the drama, it was already too late: the two lenses could be still detached from the lens, but sat together as riveted. The use of rubber gloves brought the two filters is no longer apart. When I finally googled the problem, I became aware of this filter terminals. Get a test, ordered a set and delivered the very next day. You really have to not take too much time, but it should already be careful when placing the terminals. (Not hands-free, but rather sit at a table in order to achieve an optimum fit the clamps on the filter ring and nothing to twist!) Then it is not a big effort more necessary - only the non-slip grip was enough out to both filters again easily be separated. The terminals are now always in my camera bag! A really great invention!