Canon EF 35 f/1.4L II
A new patent for a Canon EF 35m f/1.4L II has shown it's lovely head. We've seen patents previously and have heard various versions of the lens have been in testing for the past few years.
Patent Publication No. 2013-195747
- Publication date 2013.9.30
- Filing date 2012.3.21
Example 1
- Focal length f = 14.17mm
- Fno. 2.89
- Half angle ω = 56.78 °
- Image height 21.64mm
- The overall length of the lens 133.50mm
- BF 40.23mm
- 14 pieces in 11 groups Lens Construction
- 2 pieces of 2 aspherical surface
- The effective diameter of the front lens 69.96mm
Example 2
- Focal length f = 24.50mm
- Fno. 2.80
- Half angle ω = 41.45 °
- Image height 21.64mm
- The overall length of the lens 92.07mm
- BF 38.07mm
- 8 group 9 lenses configuration
- 2 pieces of 2 aspherical surface
- The effective diameter of the front lens 34.58mm
Example 3
- 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
Also included in this patent are formulas for a 14mm f/2.8 and a 24 f/2.8.
Canon EF 35 f/1.4L $1479 at B&H Photo | Amazon
Source: [EG]
cr