Features:

• Most popular protection filter
• Provides basic reduction of ultraviolet light
• 77mm diameter
• Helps eliminate bluish cast in images

Editor Reviews:

Product Description:
Film, as well as video, often exhibits a greater sensitivity to what is to us invisible, ultraviolet light. This is most often outdoors, especially at high altitudes, where the UV-absorbing atmosphere is thinner; and over long distances, such as marine scenes. It can show up as a bluish color cast with color film, or it can cause a low-contrast haze that diminishes details, especially when viewing far-away objects, in either color or black-and-white. Ultraviolet filters absorb UV light generally without affecting light in the visible region. It is important to distinguish between UV-generated haze and that of air-borne particles, such as smog. The latter is made up of opaque matter that absorbs visible light as well as UV, and will not be appreciably removed by a UV filter.The UV Protector shields lens from dust, moisture, scratches, and breakage.

Amazon.com Product Description:
Protects lenses from dust, moisture, scratches, and other damage. These filters can be kept on the camera at all times.

Rating : - Price was right
Item arrived on time. No problems visible even though it was an "open box". I've read this in other Amazon reviews about merchandise that came from Amazon. No harm as long as it works.