Promaster 37mm UV HGX Prime

Picked this up for my vintage 50mm f/1.4, and the ground, polished coating ended those weird hazy shots I'd get in bright sunlight.

I was skeptical about how much difference a filter could make, but the HGX Prime's multi-coating really cuts down on unwanted glare and keeps colors true. It threads onto my lens smoothly without any play, and the glass is noticeably clearer than the old one I was using. A solid upgrade for anyone w

The individual grinding and polishing really shows—the coating is so even that I can't tell the filter is on, and my shots stay perfectly clear with zero haze on bright days. It threads on smoothly and feels solid, so I’m not worried about it shifting mid-shoot.