Enlarging the viewfinder image by two fifths, this viewfinder magnifier is recommended for focal lengths of 75 mm or more. It also turns into magnification of 1x (0.95x with M8-Models); a combination that allows comfortable viewing of the subject with both eyes.

Both viewfinder magnifiers are simply screwed into the viewfinder ocular of the Leica M. A small chain attached to the Leica M’s carrying strap eyelet prevents it from being lost or damaged. A leather pouch is supplied for safekeeping when it's not attached.