Computar Lens Accessories 
Computar / Ganz / CBC America VM300 View Finder VM300

View Finder

The View Finder is an optical tool to determine the field view of a lens.

To determine the field of view of existing lens. Select the correct camera format scale, then rotate the View Finder barrel unit the dot coincides with the lens focal length. The object viewed through the finder is the same as seen by the camera.