I came across this video on you tube that among other things had a "very strange" method for cleaning lenses.
(link starts at 14:10 where the lens cleaning method starts and the lens cleaning method goes to about 14:35)
https://www.youtube.com/watch?v=_9YM...tu.be&t=14m10s
Has anyone come across this before? I'd be dubious trying this on my $1000 lens