Slim but has deep front threads
By DanJohnson from Boston, Mass. U.S.A. on 12/12/2007
Pros:
Accepts Filter or Cap, Clear Optics, Consistent Effect, Firm Mount, Strong Construction
Best Uses:
Color Correction, Cuts Haze, Lens Protection, UV Protection
Bottom Line:
Yes, I would recommend this to a friend
Everyone should have at lest 1 U.V. Filter and a Polarizing Filter like the ones Sigma makes. The only time one of my lenses dosn't have a filter on it is only for the time I want to shoot without it, I don't want to replace a lens or use a lens with scratched glass.