Markus says “Hi!” and B+W filters are GREAT for my lenses.

I replaced my Tiffen UV glass filter on the Canon 50/1.2 L and the Canon 16-35/2.8 L lenses with the B+W UV MRC glass filter.  The quality of my photographs improved dramatically.  It’s good to have a glass filter on your lens to protect your investments.  And at the same time,  it is good to find a QUALITY glass filter like B+W.  I hate to say this, the Tiffen glass filters are EXTREMELY POOR in QUALITY.