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CS Lenses

Photo courtesy Roland Stauber, Germany

Auto Mamiya-Sekor CS 300mm f/3.5 Lens
This is another one of the rare and hard-to-find lenses for the Mamiya NC series. In all the time I have been observing, I have only seen it a half dozen times on eBay.

The lens is surprisingly light-weight for its size. It has a built-in lens hood and a tripod mount. However, the large minimum-focusing distance of five (5) meters is quite a drawback in my opinion. I have not tested the optical performance of this lens, but I would assume that there is quite a bit of chromatic aberration due to the lack of special dispersion glass.

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Mamiya-Sekor CS Lens 300mm f/3.5
Lens Groups Elements Viewing Angle Min. Aperture Min. Focus Dist. Filter Lens Hood Wgt
300mm f/3.5 4 4 f/16 18.0 ft. (5.0m) 77mm Built-In 27.5 oz. (780g)

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