Canon News has uncovered patents for two ultra-wide-angle zoom lenses for Canon’s RF mount. We do believe we’ll see an ultra-wide-angle lens announced some time in early 2020.
The first being a very wide RF 10-24mm f/4 which would be the RF version of the EF 11-24mm f/4L USM. Canon also has an optical formula for an RF 14-28mm f/2, which would pair nicely with the RF 28-70mm f/2L USM.
Canon RF 10-24mm f/4 specifications:
Focal length: 10.30mm 14.94mm 23.30mm
F-number: 4.12 4.12 4.12
Half angle of view: 64.54° 55.38° 42.88°
Image height: 21.64mm 21.64mm 21.64mm
Total lens length: 156.50mm 145.83mm 144.37mm
BF: 12.00mm 12.00mm 12.00mm
Canon RF 14-28mm f/2.0 specifications:
Focal length: 14.42mm 19.78mm 27.16mm
F-number: 2.06 2.06 2.06
Half angle of view: 56.32° 47.56° 38.54°
Image height: 21.64mm 21.64mm 21.64mm
Total lens length: 164.32mm 150.29mm 146.47mm
BF: 16.13mm 16.13mm 16.13mm
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