Kenko Eco Multi-Coated Protector Filters

"This is the ultimate in clear filters. The Kenko MC Protector Filter will not affect the color balance or performance of your lenses in the slightest. However, constant use will protect your valued lenses from expensive front element damage which could be caused by dirt, knocks or scratches.

This multi-coated Kenko Protector Filter is designed specifically to protect a lens while not affecting the colour balance of the scene being photographed. It is the perfect filter for protection and will not have any colour effect on transparency and print films. Due to the thin frame mount there is no image vignetting with wide angle lenses."