I'm still trying to find a reason not to sell mine - other than trying it out when it arrived, I have used it exactly zero times since I bought it in November. I agree that it makes no sense to put a filter on it as the only real draws of this lens is its small size and low price and spending any extra money on it negate both.
Still haven't used it so it's up on eBay...I'm sure it's a fine lens, but I never found a use for it.
EOS 1D X, 5DIII, M + EF 24 f/1.4II, 50 f/1.2, 85 f/1.2II, 300 f/2.8 IS II || 16-35 f/4 IS, 24-70 f/2.8II, 70-200 f/2.8II || TS-E 17 f/4, 24 f/3.5II || M 22 f/2, M 11-22 f/4-5.6 IS | 18-55 f/3.5-5.6 IS || 1.4x III, 2x III
I only shoot at ISO 100 with perfect technique - should I get a Nikon?