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VILTROX 27mm f/1.2: B&H Photo / Amazon Viltrox 75mm f/1.2 AF: B&H Photo / Adorama Viltrox AF 27/1.2 E Pro Firmware update V1.1.5 AF 27/1.2 E Pro V1.1.5 Firmware Download Firmware update instructions: 1. Fixed abnormal aperture during continuous shooting Follow SonyAddict on Facebook, Twitter, Instagram, and YouTube Plus, our owners’ groups Sony a1 Owners Group Sony a9 Owners Group Sony a7 Owners Group