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EF 58mm f/1.4 new lens patent

ef-58mm-f-1.4

A new lens patent of EF 58mm f/1.4 lens was just filed By CanonPatent Publication No. 2015-172611

Published 2015.10.1
Filing date 2014.3.11
Example 1
Focal length 57.99
F-number 1.45
Half angle (in degrees) 20.46
Image height 21.64
Overall length of the lens 117.64
BF 38.23

via-Egami

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