Canon has just filed a new patent for Canon RF 13-21mm f/2.8 lens in Japan.
Canon RF 13-21mm f/2.8 embodiment:
- Zoom ratio: 1.58
- Focal length: 13.40mm 17.30mm 21.20mm
- F number: 2.88 2.88 2.88
- Half angle of view: 58.23 51.35 45.58
- Image height: 21.64mm 21.64mm 21.64mm
- Lens length: 150.15mm 136.89mm 130.04mm
- Back focus: 20.96mm 25.13mm 29.31mm
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