Specifications, comparison, reviews,
MTF-charts for lenses by Canon,
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Owner reviews: Sigma MF 100-200 mm f/ 4.5 Zoom-Kappa
sharp at aperture 8 onwards
a little bit soft at aperture 4.5
complicated in macro handling
A solid metal lense but complicated in handling due to macro switch. Its sharpness is low below aperature 8. But then it looks good.