Canon Patents: RF 24-70mm f/4L, RF 90mm f/2.8L, RF 100mm f/2.8L

Canon has filed three new patents for RF 24-70mm f/4L IS USM, RF 90mm f/2.8L IS Macro and RF 100mm f/2.8L IS Macro Lenses, which are designed for Canon EOS R full frame mirrorless camera. Take a look at the patent details below:

Canon RF 24-70mm f/4L IS USM Lens

Focal Length: 24.71 – 39.93 – 67.99
F-number: 4.12 – 4.12 – 4.12
Half Angle of Field: 41.20 – 28.45 – 17.65
Image Height: 21.64 – 21.64 – 21.64
Overall Lens Length: 99.36 – 108.69- 132.25
BF: 13.50 – 24.36 – 42.60

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

Canon EOS R body: $2,299 at AmazonB&HAdorama.

Canon Mount Adapter EF-EOS R: $99 at AmazonB&HAdorama.

Via: Hi-Lows-Note, USPTO

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