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

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

The Hoya Diffuser filter gives a soft-focus effect due to the uneven surface pattern of the glass that spreads light rays traveling through your lens

but horrible for taking pictures

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

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