According to the Egami Blog, Canon has filed a patent for an EF-M 55-300mm f/4.5-6.3 DO IS STM.
Patent Description
Patent Publication No. 2015-232674
- Published 2015.12.24
- Filing date 2014.6.11
Example 1
- Zoom ratio 5.27
- Focal length 55.04 135.00 290.01
- F-number 4.60 5.18 6.30
- Angle of view 13.94 5.78 2.70
- Image height 13.66 13.66 13.66
- Overall length of the lens 136.00 175.46 192.00
- BF 35.50 35.50 35.50
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