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