Olympus OM-system Zuiko Auto-1:1 Macro 80mm F4 lens. Early preset lens in makers box.

The world’s first 35mm SLR lens specifically designed for optimum performance at magnifications around life size.

Range of subject magnifications is ½ to 2x life size, or from 48x72mm to 12x18mm picture area.

Used together with the with telescopic Auto tube 65~116 or Auto Bellows.

Features automatic aperture and full linkage with the camera metering system. A helicoids is provided for fine focusing after desired magnification and subject distance have been set. Available apertures extend from F4 to F32 to afford a wide depth of field range..

Note: The close-up lens 80mm , designed for use with this lens , gives subject magnifications up to 2x when used together with telescopic Auto tube 65~116 or Auto Bellows.

The lens cannot be attached directly to the camera mount.

Angle of view :  9 º ( at high magnification )

Optical construction :  6 elements in 4 groups.

Diaphragm operation :  Preset

F-stop range : 4 ~ 32

Minimum focus :  0,23 m .  ( 9.1 )

Minimum field size :  48 x 72 mm  ( 1.9 x 2.8). 12 x 18mm (0.5x 0.7)

Focusing : with telescopic Auto tube 65~116 or Auto Bellows.

Fine focusing : Straight helicoids.

Weight : 170 grams ( 6.0 )

Length : 31mm  (1.2 )

Maximum diameter : 60mm (2.4 ).

Filter : 49mm.Ø

Focusing screens : 1-4,  1-10 and 1-11.