New Patents: Canon RF 16-28mm F2.8, 15-28mm F2.8-4 IS & 15-28mm F4-5.6 IS Lenses
Canon has filed several new RF mount lens patents for the 16-28mm f/2.8, 15-28mm f/2.8-4 IS and 15-28mm f/4-5.6 IS Lenses, which are designed for Canon full-frame mirrorless cameras.
[Publication number] P2022063727
[Publication date] APRIL 22, 2022
[Patent application title] Optical system and imaging device
Canon RF 16-28mm f/2.8
Example 1
- Focal length: 16.45-27.50
- F value: 2.88
- Half angle of view: 52.71-38.49
- Image height: 19.00-21.64
- Overall length: 134.57-119.35
- Back focus: 14.07
Canon RF 15-28mm f/2.8-4 IS
Example 2
- Focal length: 15.40-27.50
- F value: 2.88-4.04
- Half angle of view: 54.50-38.66
- Image height: 19.00-21.64
- Overall length: 114.50-110.87
- Back focus: 14.15
Canon RF 15-28mm f/4-5.6 IS
Example 4
- Focal length: 15.40-27.50
- F value: 4.00-5.60
- Half angle of view: 54.51-38.94
- Image height: 19.00-21.64
- Overall length: 103.50-103.50
- Back focus: 14.20
Read more:
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- Best Memory Cards for Canon EOS R6
Via: Digicame-info