Attached to the prism finder, it assures enhanced precision focusing by magnifying the central portion of the screen. After focusing, it can be raised to confirm overall composition.
Featuring 5 lens elements in 2 groups, it produces a side-correct, distortion-free image. 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 -6 to +4 diopter correction. For AE Prism Finder and Prism Finder Model 2.