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Keith over at Northlight Images has uncovered some optical formulat patents for lenses that are likely to arrive over the next year or so. One being an RF 11-24mm f/4L, which is definitely needed in the RF lineup. A Canon RF 10-24mm f/4L has been on our roadmap for quite some time.
The second is a zoom fisheye lens that builds off the Canon RF 8-15mm f/4L USM. The optical formula in the patent is for a Canon RF 8-24mm f/4L USM, which sounds like a very cool lens. As with the EF version of the zoom fisheye, it will work as a circular fisheye on a full-frame sensor and as a ‘normal’ fisheye on the crop sensors found in the Canon EOS R7 and Canon EOS R10.
Canon 11-24mm f/4L USM optical formula
- Focal Length: 11.33mm – 23.30mm
- F-Number: 4.08
- Half Angle of View: 59.63° – 42.88°
- Image Height: 21.64mm
- Entire Lens Length: 135.40mm – 130.90mm (front element to image sensor)
Canon 8-24mm f/4L USM optical formula
- Focal Length:
- F-Number: 4.08
- Half Angle of View:
- Image Height: 21.64mm
- Entire Lens Length:
- Source: Northlight Images