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A patent showing an optical formula for a Canon 15-75mm f/2-5.6 for what appears to be an APS-C fixes lens application has appeared.
Could Canon be readying a new APS-C PowerShot camera?
More after the break.
Patent Publication No. 2016-126226
- Published 2016.7.11
- Filing date 2015.1.7
Example
- Zoom ratio 4.72
- Focal length 15.60 33.30 73.60
- F-number 2.06 3.91 5.76
- Half angle of view (degrees) 36.01 22.30 10.51
- Image height 11.34 13.66 13.66
- Overall length of the lens 85.91 88.09 110.00
- BF (in air) 6.28 16.31 22.07
- Inner focus (Group 5)
- Anti-vibration (group 4)
- Patent Publication No. 2016-126226
- Published 2016.7.11
- Filing date 2015.1.7
Example
- Zoom ratio 4.72
- Focal length 15.60 33.30 73.60
- F-number 2.06 3.91 5.76
- Half angle of view (degrees) 36.01 22.30 10.51
- Image height 11.34 13.66 13.66
- Overall length of the lens 85.91 88.09 110.00
- BF (in air) 6.28 16.31 22.07
- Inner focus (Group 5)
- Anti-vibration (group 4)
The patent includes various focal length combinations and you can read about them over at Egami.
