Here is a new Canon patent application, as usual for RF-mount lenses. Canon patent application…
Canon Patent for 9-18mm Ultra-Wide Angle Lens for EOS M
Egami (translated) spotted a patent for an EF-M 9-18mm f/3.5-4.5 STM lens for the EOS M system. A bit weird since there is already the excellent EF-M 11-22mm f/4-5.6 IS STM lens. I guess this is just one of the many patents Canon is filing and not a lens that will hit the market anytime soon.
- Patent Publication No. 2015-34892
- Published 2015.2.19
- Filing date 2013.8.9
- Example 1
- Zoom ratio 1.90
- The focal length f = 9.22 14.67 17.50mm
- Fno. 3.45 4.02 4.63
- Half angle ω = 55.92 42.90 37.92 °
- Image height Y = 13.63mm
- Overall length of the lens 94.76 85.16 91.16mm
- BF 13.06 15.35 13.60mm
- Negative positive and negative positive 4-group zoom
- Inner Focus (third group)
- Video support