Canon Patent: 14-35mm f/2.8 For Full Frame EOS R Cameras

Here is a new Canon patent application, this time for. 14-35mm f/2.8 lens for the RF mount and full frame cameras.

Canon patent application 2024058439 (Japan, published 4/25/2024) discusses optical formulas for a 14-35mm f/2.8 lens.

From the patent literat

• An object of the present invention is to provide a negative lead type wide-angle zoom lens that is compact, is equipped with an anti-vibration group, and has high optical performance over the entire zoom range.
• BACKGROUND ART In recent years, zoom lenses used in imaging devices are desired to have a wide angle of view, high optical performance over the entire zoom range, and be compact. Patent Document 1 discloses a negative lead type zoom lens in which a lens group with negative refractive power is arranged on the object side as a zoom lens whose entire system is compact and can easily widen the angle of view.
• The present invention provides a negative lead type wide-angle zoom lens that is compact, is equipped with an anti-vibration group, and has high optical performance over the entire zoom range.

Example 1

• Focal length: 14.42-33.91
• F value: 2.88
• Half angle of view: 52.67-32.54
• Image height: 18.91-21.64
• Total length: 154.50-145.20
• Back focus: 17.88-37.9

More Canon patents are listed here.

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