The Mamiya Variable Diopter, Flip-Up Magnifier for Prism Finders - Attached to the prism finder, it assures enhanced precision focusing by magnifying the central portion of the screen 2 times.
Note: For Pro & Super only;
This magnifier only enhances the central part of the focusing screen; For AE Prism Finder and standard Prism Finder
Provides a twice normal (2X) magnification of the central area; Particularly useful for critical focusing with wide angle, telephoto and variable soft focus lenses, as well as for copy work and macro photography
It is attached by merely sliding it on to the camera's viewfinder; After focusing, flip it up for normal viewing
Diopter adjustment is also possible with a range from -5 to +5 to accommodate near or farsighted vision
5 lens elements in 2 groups it produces an unreversed and laterally correct image