Tiffen 52mm UV Protector Filter 52UVP B&H Photo Video
Amazon.com : Hoya 52mm UV and IR Cut Screw-in Filter : Camera Lens Neutral Density Filters : Electronics
52mm Alpha UV Filter - Allen's Camera
Chiaro 52mm 95-UVAT UV Filter 95-UVAT52 B&H Photo Video
Amazon.com : 52mm Pro Series Multi-Coated High Resolution Digital Ultraviolet Filter for Pentax smc DA 50mm f/1.8 Lens, Pentax DA 18-55mm f/3.5-5.6 AL WR Zoom Lens : Electronics
Promaster HGX PRIME UV Filter - 52mm at Acephoto.net
Promaster 52mm UV Lens Filter by Promaster at B&C Camera