Key Features and Use Cases:
Right-Angle Viewing: The primary function is to allow the user to look down into the viewfinder from above the camera, which is ideal when shooting from low positions or when the camera is on a copy stand or tripod.
Variable Magnification: A selection lever on the eyepiece tube allows switching between two magnification settings: 1.2x for framing the entire scene, and 2.5x for critical focus inspection.
Diopter Correction: It includes a built-in rotatable helical ring for diopter adjustments, accommodating individual eyesight differences.
Rotation: The eyepiece tube can be rotated a full 360° with click stops every 90°, allowing for flexible viewing positions.
Compatibility: It is specifically designed for Olympus OM-system film SLR cameras, such as the Olympus OM-1 and OM-2, and generally fits other compatible SLRs.