K&F Concept 37MM MC-UV Filter, Slim, Green Multi-coated, German Optics

A Series — UV filter 37 mm, protects the front element and filters ultraviolet light.

• Screws onto a lens with a 37 mm thread.

An MCUV filter does two jobs at once. It filters out the ultraviolet light that puts a bluish veil over distant and mountain shots, and above all it shields the front element — instead of a scratched lens you replace a filter costing a fraction. It has no other effect on the picture, so it can stay on permanently.