robocomp
20th of August 2001 (Mon), 01:47
I have a canon 28-135 (72mm)and a sigma 17-35 (82mm). I did not want to spend a fortune on lenses but want to protect my glass. I dont want to put on a crap filter that will interfere with the quality optics. Also, should i get a thin type of filter for the sigma wide angle to avoid vignetting? Please recommend brand, part numbers, and where I might purchase at a value. Should these be uv, clear, coated? thanks for the help. Just do not want to throw bad money after good. Thanks