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Canon Inc. has filed a patent application for more optical formulas of fast RF prime lenses, this time an RF 28mm f/1.4L USM and an RF 35mm f/1.4L USM.
There have been many patents in the past for these optical formulas, but our roadmap shows an RF 35mm f/1.2L USM and I haven't yet been told that an RF 28mm f/1.4L USM was on the way.
Canon RF 28mm f/1.4L USM
Focal length: 26.79mm
F-number: 1.44
Half angle of view: 38.93°
Image height: 21.64mm
Lens overall length: 134.78mm
Backfocus: 13.00mm
Canon RF 35mm f/1.4L USM
Focal length: 33.73mm
F-number: 1.44
Half angle of view: 32.68°
Image height: 21.64mm
Lens overall length: 143.92mm
Backfocus: 20.00mm
