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Canon News has uncovered a patent showing optical formulas for fast RF zoom lenses, likely of the L variety. The purpose of the patent is to showcase a high-performance zoom lens design.
Of the three embodiments in this patent, only the RF 35-135mm f/2.8 seems like a design that has a slight chance of becoming a consumer product.
|Canon RF 35-135mm f/2.8|
|Half Angle of View||31.44°||17.41°||9.24°|
|Total Lens Length||173.35mm||186.83mm||203.35mm|
|Canon RF 40-150mm f/2.8|
|Half Angle of View||28.37°||17.41°||8.32°|
|Total Lens Length||173.35mm||191.43mm||218.30mm|
|Canon RF 30-110mm f/2.8|
|Half Angle of View||34.92°||17.41°||11.13°|
|Total Lens Length||173.09mm||189.92mm||203.35mm|