Olympus M-system E.Zuiko Auto-T 135mm F3.5 lens. Not many around.

The Olympus M system 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.

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

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.

An extremely compact and easy to use lens wit an overall length of only 73mm. Luxurious 5-element construction gives corner-to-corner image quality without distortion even at close distances. The focal length is enough for clear telephoto effects without requiring too much experience to get good results. This makes the lens an excellent choice for beginners. High cost performance.