Canon Files Patent for EF-M 15-50mm f/3.5-5.6 IS STM

According to the Egami Blog, Canon has filed an optical design patent for an EF-M 15-50mm f/3.5-5.6 IS STM.

Patent Description

• Patent Publication No. 2016-75742
• Published 2016.5.12
• Filing date 2014.10.3
• Zoom ratio 2.94
• Focal length 16.00 27.43 47.04
• F-number 3.62 4.50 5.82
• Half angle of view (degrees) 37.55 26.47 16.19
• Image height 12.30 13.66 13.66
• Overall length of the lens 78.86 74.05 77.88
• BF 20.48 27.14 37.06