Hoya Blue Intensifier Filter for Sky & Seascape Photos protection There is also an overall

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

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

but horrible for taking pictures

Despite the slim profile the filter includes front filter threads so you can attach additional filters or your protective lens cap

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

Hoya Blue Intensifier Filter for Sky & Seascape Photos protection There is also an overallDescription 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