Hoya 62mm 80A Blue Color Conversion Camera Lens Filter

HOYA 52mm Blue Intensifier Filter Both Sides Coated Camera Lens Filter

HOYA 52mm 80B Blue Conversion Filter Both Sides Coated Camera Lens Filter

Hoya 55mm 80A Blue Camera Lens Filter Type D Flood Coated Japan w/ Case FS

Vintage - Hoya 52mm - 80A - Blue Camera Lens Filter with Case. Made in Japan.

HOYA 52mm UV Lens Filter Both Sides Coated Protection Filter

Hoya 55mm 80A Blue Color Conversion Lens Filter

Hoya 62mm UV Both Sides Coated Camera Lens Filter