Leica E39 Adapter for Universal Polarizer M Filter

This Leica Brightline Finder M-21 is a viewfinder for 21mm M lenses. The finder provides a remarkably vibrant, high-contrast image. Due to a concave mirror in the optics, part of the incoming light is used to illuminate the picture outline as a bright frame. This is the same as in viewfinders of Leica M cameras.

The Leica Angle Viewfinder M shows a large, round, upright, and un-reversed central section of the viewfinder image of approximately 0.3″. The freely rotatable 45° eyepiece makes it easy to view the subject in all situations, especially where the photographer does not want to hold the camera exactly in front of the eye, e.g. in case of reproductions or for close-ups close to the ground.