The Japanese photography blog, Egami, has discovered a new Canon patent for a zoom Cinema lens with a soft focus. This brings back memory of the 1980s when I owned the Canon EF 135mm f/2.8 Soft Focus lens. It was not an expensive lens and also not a top performer but it did the trick and produced images with a soft, slightly blurry look to it, the kind you see in Boudoir photography.
If this design ever gets into production, I anticipate it to be an expensive lens. Canon is placing a lot of emphasis and high hopes on the Cinema EOS line of cameras and lenses. They expect it to be a very successful line for them in the years to come.
Patent Publication No. 2014-235203 (Google Translated)
- Published 2014.12.15
- Filing date 2013.5.31
- Zoom ratio 7.50
- The focal length f = 34.00-68.00-102.00-136.00-254.99mm
- Fno. 2.70
- Half angle ? = 24.58-12.88-8.67-6.52-3.49 °
- Image height Y = 15.55mm
- Overall length of the lens 441.54mm
- BF 51.02mm
- 4-group zoom of positive and negative negative-positive
- Spherical aberration adjustment group (soft focus)
- Not shift the focus position can be switched to soft focus