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: Sigma 400 mm f/ 5.6 (2)

Long-eared owl
Sigma 400 mm f/ 5.6
Author: hk12

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Grey Herons
Sigma 400 mm f/ 5.6
Author: hk12

0(0) 0 2460