Canon 67mm Protector Filter
The 67mm UV Protector Filter from Canon 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 helps minimize 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.
Eliminates some of the Ultraviolet (UV) light which can register on film and videotape as a bluish cast that can obscure distant details
If desired, it can be left on the lens at all times for protection
Especially valuable as a general lens protector
Guards against fingerprints and scratches to the front element of your lens