All About Photographic Lenses. Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.
The Mamiya-Sekor Zoom CS 45-90mm f/3.5 Auto is a standard zoom lens with a constant max. aperture for 35 mm Mamiya NC SLR cameras with the CS bayonet mount.
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