Patent: EF-M 55-300mm f/4.5-5.6 DO IS

Last updated: May 6, 2025 3:38 am

Published: January 8, 2016

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Canon continues to develop diffractive optics technology, and this time it's for the EF-M mount. A patent for an EF-M 55-300mm f/4.5-5.6 DO IS optical formula has appeared. The lens is for APS-C mirrorless cameras.

Patent Publication No. 2015-232674 (Google Translated)

Published 2015.12.24
Filing date 2014.6.11
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

I'm not sure how likely a DO lens is for the EOS M system, unless they've figured out a way to bring costs down.

TAGGED:EF-M EF-M 55-300 f/4.5-5.6 DO IS EOS M patent

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ByCraig

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Craig is the founder and editorial director for Canon Rumors. He has been writing about all things Canon for more than 17 years. When he's not writing, you can find him shooting professional basketball and travelling the world looking for the next wildlife adventure. The Canon EOS R1 is his camera of choice.