There are several new Canon wide-angle prime lens patents posted on web.
One of them is EF 35mm f/1.4L II. See the lens patent below:
- Focal length f = 35.50mm
- Fno. 1.45
- Half angle ω = 31.36 °
- Image height 21.64mm
- The overall length of the lens 135.01mm
- BF 38.56mm
- 11 pieces Lens Construction 9 group
- One piece of one aspherical surface
- The effective diameter of the front lens 49.79mm
The current EF 35mm f/1.4L USM lens is listed as discontinued at Amazon.com:
Also, there are two other wide-angle prime lens patents posted: EF 14mm f/2.8L III and EF 24mm f/2.8 II.
via: EG
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