All About Photographic Lenses.
Specifications, comparison, reviews, MTF-charts for lenses by Canon, Nikon, Sony, Pentax, Olympus, Sigma, Tamron, Carl Zeiss, etc.
Photos taken with a lens: Topcor Macro-Topcor 135 mm f/4 (1)

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Topcor Macro-Topcor 135 mm f/4
Author: Klaus Bo

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