Tag Archives: 55300mm

Canon Files Patent for EF-M 55-300mm DO IS STM

Posted on 8 January 2016 by admin

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 … Continue reading →

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