Olympus M-System E. Zuiko Auto-T 135mm F 3.5 rare and clean lens.

The Olympus M-1 was launched on the Photokina in Koln in 1972.

The name M-1 was called after the designer Mr. Maitani , chief designer of Olympus in this period. After all the camera makers have installed there stands on the Photokina , the people of Leitz where looking around and saw the Olympus M-1, they made a large problem about the name M-1 because Leitz already had a camera model named Leica M-1. They threatened to sue Olympus if they did not changed the name.  Olympus staff on the Photokina had to change the name in one night because the show was opening the next morning and they had invested a large amount in the new system. On all the lenses the M of the M-system  the M was made black with paint and all the body where made with stickers on the M-system logo. The name was changed from M-system to OM-system. But a number of cameras and lenses where already sold and by costumers and users. These cameras and lenses are rare and hard to find in nice condition. The camera has a few features witch the later model did not have. From brochures from the M-system you can see that a lot of lenses and accessories’ where all ready designed and made.

Olympus M-System   E. Zuiko Auto-T 135mm F 3.5 

Angle of view : 18 º

Optical construction : 5 elements in 4 groups.

Diaphragm operation : Automatic.

F–stop range : 3.5 ~ 22.

Minimum focus : 1.5m (  5  ).

Minimum field size : 21 x 32cm ( 8.3 x 12.6 )

Focusing : Straight helicoids

Weight :  290 grams  (  10.2 )

Length : 73mm  (  2.9 )

Maximum diameter :  61mm ( 2.4 )

Filter size : 49mm. Ø screw-in.

Notes : Lens hood is a built-in, sliding type. Filter diameter is 49mm .

Suitable focusing screens : 1-1,1-2,1-3, 1-4, 1-6, 1-13 and 1-14.

The M system lenses have straight screws in the bayonet and are always “white nose” lenses.  They where not distributed in large numbers and are rare to find.

 Serial number : 104792