I always thought this Sigma 10mm 2.8 fisheye I had was crap. There is some incompatibility between
it and the Pentax cameras Sigma made it to work on. You would think depth of field on a 10mm lens
would help, but lots of shots from this lens were always out of focus. Manual focus on a Fuji X-E2
with focus peaking has fixed this lens. It's amazingly sharp. And look at those awesome starbursts on the light. No filter here, that's just the lens.Go figure.