About this item

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• 50mm focal length, lens not zoom able
• 75mm equivalent focal length on aps-c cameras, 80mm equivalent focal length on canon aps-c cameras
• F1.4 maximum aperture, f16 minimum
• Ring-type ultrasonic-type af motor with full-time manual focusing, 77mm filters. 77mm filters. 0.4m/15.7″ minimum focus. Please use a usb dock for calibrating the focus