Mamiya Viewfinder magnifier

Attached to the prism finder, this Variable Diopter Flip-up Magnifier assures enhanced precision focusing by magnifying the central portion of the screen 2 times. After focusing, flip it up for normal viewing. Featuring 5 lens elements in 2 groups, it produces an unreversed and laterally correct image. The Magnifier is particularly useful for critical focusing with wide angle, telephoto and variable soft focus lenses, as well as for copy work and macro photography. Built-in -5 to +5 diopter correction. For AE Prism Finder and standard Prism Finder. To attach Variable Diopter Magnifier, standard eyecup is removed by sliding upwards.