MS-Optics C.Z TESS 35/3.5

YashicThis is a record of a Yashica T (or Kyocera T ) TESSAR lens taken out by MS-Optics (Miyazaki Kogaku) and modified for Leica M mount and used with a Leica M digital.

Table of contents

Gallery
C.Z.TESS 35mm F3.5 photo example (with Leica M-P)

Impression
This lens was installed in compact cameras of the film era.
Even in the digital age, the lens is very good, with only a little peripheral light attenuation. However, when shooting a blue sky with LEICA M-P TYP240, a color cast may occur in the periphery of the image.
The color cast is unavoidable because the lens design is old, and if the periphery of the image is blackened by taking a picture so that the periphery of the image falls, the color cast will not appear.
Color cast depends on the camera’s sensor, so if your camera does not use color cast, you only need to worry about peripheral light reduction.
The lens is compact, with a thickness of 9mm and a weight of 36g without the hood, which is an unusual size and weight for a lens in the 2020s.
One operational drawback is that the aperture cannot be changed when filters are attached.
Since the slightly darker maximum aperture of 3.5 is sharp enough, I think it is necessary to make the same decision as with the Russian Russar and Orion lenses to shoot only at the aperture value you have chosen.

Depending on when the lens was converted, the nameplate may read “C.Z.TESS” or “FOR TESSAR” as on this lens. The silver lens barrel comes in silver and black. The silver lens barrel was modified in the old days and has an L39 mount, while the black lens barrel was recently modified and has an M mount.

This is a Tessar 35mm/F3.5 lens, but the Sonnar 35mm/F2.8 lens attached to the CONTAX T3 with the same focal length is also available in the market, modified by Ms-optics, and I am very interested in it, but the price is too high for me to get it.

TESS 35/3.5 +GM5

Lens specification
This lens was mounted on a 35mm film camera using the Tessar format with four elements in three groups.
The lens uses Ms-optics’ common helicoid MS-35 as its helicoid.

ItemValuenote
focal length(mm)35
Maximum aperture3.5
Minimum aperture16
Lens configuration3groups 4elementsTessar Type
Minimum distance(m)0.6Works with the camera’s rangefinder from 0.8m to infinity.
Lens length(mm)9
Lens max diameter(mm)48.7
Filter diameter(mm)34
Weight(g)36

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