Siemens-Spiegel-Hypomediar 20cm f6.8
Siemens-Spiegel-Hypomediar 20cm f6.8 lens for C mount. This is a unique mirror lens design with an adjustable diaphragm from f6.8-f16. Designed for 16mm c-mount cameras, this lens will not cover Micro Four Thirds (see pic for coverage at infinity), but will cover Super 16 image area. A rare lens in good condition, with some cosmetic barrel wear, oil on diaphragm blades, good optics.
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