Our earlier report of a new ultra wide angle RF L lens coming in the first half of 2023 gets a related patent application for a similar optical formula, along with others.
asobinet found and first reported on this patent.
Canon RF 10-20mm f/4
- Focal length: 10.30mm – 19.40mm
- F-number: 4.12
- Half angle of view: 62.03° – 48.12°
- Image Height: 19.40mm – 21.64mm
- Length: 129.14mm – 132.69mm
- Back Focus: 15.09mm
Canon RF 9-18mm f/4
- Focal length: 9.27mm-17.46mm
- F-number: 4.12
- Half angle of view: 64.34° – 51.10°
- Height: 19.30mm – 21.64mm
- Length: 124.52mm – 125.00mm
- Back Focus: 15.37mm
Canon RF 11-24mm f/4L USM
- Focal length: 11.33mm-23.28mm
- F-number: 4.12
- Half angle of view: 59.58° – 42.90°
- Height: 19.30mm – 21.64mm
- Length: 130.00mm – 131.90mm
- Back Focus: 16.34mm
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