The 34mm UV Protector Filter is a wise initial investment. It can help protect your valuable investment from dust, moisture and scratches, which can lead to costly repairs. 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 UV filter is the best available protection for 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 them as "cheap insurance".