The 72mm 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".
Aside from that more-than-significant benefit, UV filters cut through some of the haze in the atmosphere rendering your photos clearer, sharper and more contrasty. For those who enjoy outdoor photography, especially distant vistas, a UV filter can produce a more distinct image by removing much of the blue tint normally associated with atmospheric haze.
A UV Protector is probably the most popular UV filter people use. As a lens protector, it should be left on at all times to guard against front element damage but also adds the benefit of rendering your images clearer.