Patent of Canon CN-E 35-260mm f/2.8 L S Soft Focus Lens
Canon has just filed a new patent of zoom cinema lens :Canon CN-E 35-260mm f/2.8 L S Soft Focus.
Patent Publication No. 2014-235203 (Google Translated)
- Published 2014.12.15
- Filing date 2013.5.31
Example 3
- Zoom ratio 7.50
- The focal length f = 34.00-68.00-102.00-136.00-254.99mm
- Fno. 2.70
- Half angle ω = 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
Source: EG