K&F Concept HMC CPL Digital Slim Cicular Polarizer Filter for Canon Nikon Sony (37mm)

Circular Polarising filters allow you to remove unwanted reflections from non-metallic surfaces such as water, glass etc. They also enable colour to become more saturated and appear clearer, with better contrast. This effect is often used to increase the contrast and saturation in blue skies and white clouds. High quality product made of import optics glass. Metal sealing ring instead of the plastic sealing ring, better tightness, avoids fall or loose.Ultra thin 5.45MM filter frame to help avoid vignetting on super wide angle lenses also designed to hold a lens cap. Double-threaded, further filters can be added. High quality anti-reflection coating Ultra slim 5.45mm magnalium frame, helps to avoid vignetting Superfine frame polished with strict surface treatment Laser engraving fonts, never worn or fade