Canon has just filed a new patent for Canon 3.6-255mm F2.8-7 lens with a built-in extender for Powershot. It can take photos at 2000mm f/10 when converted to 35mm.
Detail translated by Google:
- Patent Publication No. 2016-212210
- Published 2016.12.15
- Filing date 2015.5.7
- Example
- Zoom ratio 66.07
- Focal length 3.71 10.16 245.00
- F number 2.90 4.99 7.07
- Half angle of view (degree) 40.59 20.88 0.91
- Lens total length 94.31 86.88 150.26
- BF 9.45 16.24 9.56
- Super telephoto (D)
- Focal length 359.99
- F number 10.39
- Half angle of view (degree) 0.62
- Lens total length 150.26
- BF 3.56
Source: EGAMI
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