Hoya Blue Intensifier Filter for Sky & Seascape Photos protection Filter Factor: 2 Glass Type:

Filter Factor: 2 Glass Type: Hoya Optical Number of Multi-Coatings: 6 total / 3 each side Hardened Top Layer: No Anti-Static: No Frame Construction: Standard Profile / Aluminum Front Filter Threads: Yes

There is also an overall softening effect throughout the entire image when using this filter

Hoya color conversion filters are manufactured in Japan using hand-selected silicates that are carefully smelted and blended to yield high-performance optical glass

The HOYA SOFT A and B are filters with randomly arranging tiny lenses-shaped like drops of water on the surface of optical acrylic

Hoya Blue Intensifier Filter for Sky & Seascape Photos protection Filter Factor: 2 Glass Type: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 isnt effective because of the direction of the sun Specifications Filter Factor: 2. 5 Glass Type: Hoya Optical