Hoya Blue Intensifier Filter for Sky & Seascape Photos

Description The Hoya Blue Field Intensifier filter enhances colors in the blue region of the spectrum without adversely affecting other colors. The Blue Field Intensifier filter is useful when: Improving brightness in seascapes In combination use with HD3 UV or HD3 Circular Polarizer to increase contrast and sharpness When a polarizing filter isn’t effective because of the direction of the sun Specifications Filter Factor: 2.5 Glass Type: Hoya Optical Light Transmission: 0 Number of Multi-Coatings: single coating per side Hardened Top Layer: No Anti-Static: No Frame Construction: Standard Profile / Aluminum Front Filter Threads: Yes