Canon Files Patent for CN-E 70-200mm f/2.8 Lens

According to the Egami Blog, Canon has filed a patent for a CN-E 70-200mm f/2.8 lens for APS-C and Super 35mm sensor format cameras. Note that the lens will likely be marketed as a T2.8 lens to match their CN-E 15.5-47mm and 30-105mm lenses with the same image circle.

Description of the patent literature

Patent Publication No. 2015-230449

• Published 2015.12.21
• Filing date 2014.6.6

Example 1

• Zoom ratio 2.86
• Focal length 70.00 118.30 200.00
• F-number 2.80 2.80 2.80
• Half angle (in degrees) 12.52 7.49 4.45
• Image height 15.55 15.55 15.55
• Overall length of the lens 277.01 277.01 277.01
• BF 44.72 44.72 44.72