I decided today to remove the 81-A filter I have on my lens, and simply use the lens cap to keep the lens safe, and to keep out most of the dust. Prior to this, I have been very religious about using a glass filter to 'protect' the lens surface from impact. But I prefer to have two fewer glass surfaces in my way when I take a picture, I have not (so far) had a significant impact to my camera which would damage a lens, and I think that if something were to hit the filter hard enough to shatter it, I would suffer lens damage as well. So I am keeping the lens cap in place at all times to protect the lens (that's what it's there for, right?) except when I want to take a picture. I somehow find the extra filters a nuisance except when I need to use one deliberately to alter the light coming through. YMMV. Are there any others out there who work crazy like this? With best regards, Steve Mack PS Also, I save money when I buy a new lens.