Canon filed new RF-mount lens patents for 300mm F2.8 1.4x, 400mm F2.8 1.4x, 600mm F4 1.4x with built-in teleconverters.
[Publication number] P2022142979
[Publication date] October 3, 2022
[Patent application title] Optical system, lens device, imaging device
More details of the new Canon Patents for full-frame mirrorless cameras can be found below.
Example 1 ML
- Focal length: 389.00
- F-value: 2.91
- Half angle of view: 3.18
- Image height: 21.64
- Total length: 406.00
- Back focus: 53.83
Example 1 Mounting a teleconverter
- Focal length: 544.00
- F-value: 4.19
- Half angle of view: 2.28
- Image height: 21.64
- Overall length: 406.01
- Back focus: 53.83
Example 2 ML
- Focal length: 582.00
- F-value: 4.12
- Half angle of view: 2.13
- Image height: 21.64
- Overall length: 486.10
- Back focus: 81.91
Example 2 Mounting a teleconverter
- Focal length: 814.80
- F-value: 5.88
- Half angle of view: 1.52
- Image height: 21.64
- Overall length: 486.10
- Back focus: 81.91
Example 3 ML
- Focal length: 300.00
- F-value: 2.91
- Half angle of view: 4.12
- Image height: 21.64
- Total length: 320.00
- Back focus: 49.68
Example 3 Teleconverter installation
- Focal length: 420.00
- F-value: 4.12
- Half angle of view: 2.95
- Image height: 21.64
- Total length: 320.00
- Back focus: 49.68
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