Patent: Canon RF 90mm f/2.8L IS Macro & RF 100mm f/2.8L IS Macro Lenses

Posted on by

In addition to the RF 24-70mm f/4L IS USM lens, Canon has filed two patents for RF 90mm f/2.8L IS Macro and RF 100mm f/2.8L IS Macro lenses.

Japanese Patent Application No. 2017-108266 shows two different optical formulas.

Specification and lens arrangement of embodiment 3
Focal length: 86.00mm
F number: 2.87
Half angle of view: 14.12
Image height: 21.64mm
Lens length: 115.07mm
Back focus: 15.93mm

Specification and lens arrangement of embodiment 1
Focal length: 97.00mm
F number: 2.92
Half angle of view: 12.57
Image height: 21.64mm
Lens length: 115.12mm
Back focus: 20.01mm

Via: Northlight, Hi-Lows-Note, CanonRumors