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: Tamron AF 28-300 mm f/ 3.5-6.3 XR Di LD Aspherical (IF) Macro A06 (2)