55mm HoyaPro1 Super HMC UV (0) Filter   Theseoutstanding filters offer revolutionary performance in lighttransmission and color balance. 12 layers of Super Multi-coating areapplied to the surfaces of the Skylight 1B and UV (0) models, whichproduces an average transmission of 99.7%! Coupled with maximum surfaceprecision, this allows increased resistance to flare and stunningimages can be recorded at wide apertures without compromising theperformance of your lenses. Our ultra thin Circular Polarizing filtershave seven layers of Multi-coating applied to their rear surface toeliminate internal reflections and ghosting. Advanced thin selectivefilm is used to guarantee perfectly polarized light with neutral colorbalance. Their slim profile of just 5mm avoids any vignetting problemsand makes them ideal for use with wide angle lenses. There is no frontfemale thread, but they do accept our push-on lens caps. HOYA Super HMCfilters will appeal to the most demanding of photographers who requirethe ultimate in performance.