Bahtinov Mask 62mm

A Bahtinov Mask is a focusing aid. When fitted over a lens, it creates a 6 pronged diffraction pattern. As you adjust the focus, the middle spikes will move. When exactly in the middle, perfect focus has been achieved.

This small 62mm Mask is designed for use with camera lenses. It is mounted to a filter holder with an M62 thread allowing it to be screwed directly into a camera lens.