Patent : Canon RF 14-28mm f/2 and RF 10-24mm f/4 Lenses

Canon filed two new patents for RF 14-28mm f/2 and RF 10-24mm f/4 lenses in USA and Japan. Both lens patents are RF mount ultra-wide zoom lenses.

The first one in the patent application describes a RF 14-28mm f/2L USM lens which will be good companion for the RF 28-70mm f/2L USM lens.

The second one is RF 10-24mm f/4L USM lens or RF 12-24mm f/4L USM lens, similar to EF 11-24mm f/4L USM lens. Check out the details below. 

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

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 12-24mm f/4 specifications:

focal length 12.36 14.94 23.30
F-number 4.12 4.12 4.12
Half angle of view (degree) 60.26 55.38 42.88
Image height 21.64 21.64 21.64
Total lens length 138.50 133.67 130.79
BF 22.49 26.06 37.65

via: BCN