Canon RF Patents: 200mm f2, 300mm F2.8 & 500mm F4 Super-Telephoto Lenses
Canon has filed several new RF mount super-telephoto lenses patents for the 200mm f/2, 300mm f/2.8 and 500mm f/4 Lenses for Canon full-frame mirrorless cameras.
[Publication number] P2021039379
[Publication date] APRIL 25, 2022
[Patent application title] Optical system and imaging device
600mm F4
Focal length 585.00
F number 4.12
Half angle of view 2.12
Image height 21.64
Lens overall length
475.00 Back focus 103.93
400mm F2.8
Focal length 392.57
F number 2.90
Half angle of view 3.15
Image height 21.64
Lens overall length 371.15
Back focus 75.00
500mm F4
Focal length 489.05
F number 4.12
Half angle of view 2.53
Image height 21.64
Lens overall length 411.08
Back focus 100.00
800mm F5.8
Focal length 777.00
F number 5.80
Half angle of view 1.59
Image height 21.64
Lens overall length 498.01
Back focus 158.67
300mm F2.8
Focal length 292.53
F number 2.90
Half angle of view 4.23
Image height 21.64
Lens overall length 273.92
Back focus 76.35
200mm F2
Focal length 200.00
F number 2.06
Half angle of view 6.17
Image height 21.64
Lens overall length 196.01
Back focus 38.50
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Via: Digicame-info