Sigma 20mm f/1.4 and 23mm f/1.4 Mirrorless APS-C Patent Found
Sigma 20mm f/1.4 APS-C Focal length: 20.00 F value: 1.46 Angle of view: 74.82 Image height: 14.20 Overall length: 94.00 Sigma 23mm f/1.4 APS-C Focal length: 23.00 F value: 1.46 Angle of view: 65.76 Image height: 14.20 Overall length: 94.00 Back focus: Sigma 16mm f/1.4 DC DN Contemporary B&H Photo / Amazon / Adorama Sigma 30mm f/1.4 DC DN … Continue reading Sigma 20mm f/1.4 and 23mm f/1.4 Mirrorless APS-C Patent Found
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