Canon EOS-7D Lens Filter

Constant use 72mm UV / UltraViolet Filter will protect your valued lenses from expensive front element damage which could be caused by dirt, chips and scratches. The importance of blocking harmful UV rays cannot be stressed enough when your eyes are looking directly through an SLR camera lens. In addition to your own eyes, both the lens optics and camera components in the image path need 72mm UV filter protection against these rays.