Sigma recently unveiled their 16mm F1.4 for Sony E-Mount (designed for APS-C sensors) and Micro Four Thirds. Here are initial impressions!
Sigma 16mm f/1.4 DC DN Contemporary Review
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Bundle Includes: Sigma 16mm f/1.4 DC DN Contemporary Lens for Sony, Photo and Video Backpack, Rechargeable Battery (2-Pack) and Dual Charger, 32GB
Sigma 16mm f/1.4 DC DN Lens for Sony Bundle with Photo and Video Backpack, Battery (2-Pack) and Dual Charger, Memory Card, Filter Kit with UV, CPL and
Feature, 16mm F1.4 DC DN, Contemporary, Lenses
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Sigma 16mm F/1.4 DC DN Contemporary Lens Review
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Sigma 16mm F1.4 DC DN Contemporary for Sony E-mount sample gallery: Digital Photography Review