Latest patent surfaced over the web is of a Ultra Wide-angle zoom lens for APS-C Mirrorless camera. The Lens features focal-length 9-18mm, a very important range that a professional Landscape and architecture photographer always uses.
The other most important part of the patent is Canon optimized the super wide-angle zoom lens for less correction of the distortion, we will put more details as soon as it become available
Patent details translated by google
- Patent Publication No. 2016-54371
- Published 2016.4.14
- Filing date 2014.9.3
- Example
- Zoom ratio 1.90
- Wide-angle intermediate telephoto
- Focal length 9.22 14.05 17.50
- F-number 3.39 4.04 4.63
- Half angle of view (degrees) 53.07 44.12 37.91
- Image height 12.27 13.63 13.63
- Overall length of the lens 89.68 83.60 86.84
- BF 14.22 15.78 16.00
- Canon patent
- Upon correction of the distortion, providing a constraint on stretching amount at each image height
- Properly set the curve shape of the distortion aberration
Do contribute us if you have a better translation, more patents are available here.
