The Hoya 82mm Ultraviolet (UV) Pro 1 Digital Filter is a wise initial investment. It helps protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs.
Digital camera CCD or CMOS sensors are highly susceptible to reflections. This stray light can ruin your photographs with flare and ghosting. Hoya Digital Multi-Coating reduces any internal reflections, which means a clearer image with greater contrast.
A UV filter not only minimizes the bluish cast sometimes found under daylight conditions, but is also the best available protection against accidental damage to the front element of your lens. A lens that accidentally gets dropped on its front element while hiking can potentially be saved by purchasing this item. Some people refer to it as "cheap insurance"