원문: www.canonrumors.com/patent-...

Patent: Canon EF 17-35mm f/4-5.6 IS STM

We’ve heard some chatter that Canon would continue to develop it’s non-L zoom lenses for full frame camera lineup and this patent for an EF 17-35mm f/4-5.6 IS would seem to fit into that segment.

Canon News, a new leader in patent tracking found this one.

Canon EF 17-35mm f/4-5.6 IS STM Optical Formula

Focal distance: 17.50 25.12 34.09
F number: 4.00 4.85 5.88
A half field angle (degree): 51.03 40.73 32.40
Image height: 21.64 21.64 21.64
Whole length of the lens: 130.88 128.52 134.05
BF: 37.60 49.75 64.06

Japan patent application 2017-161568

요약

우리는 캐논이계속해서 풀프용 non-L줌렌즈를 개발할것이며 EF 17-35mm f/4-5.6 IS렌즈의특허가이에적합할것이라고들었다.

음..특허이기는하지만 풀프용 non-L 17-35mm렌즈라면 중저가렌즈인듯한데 나오면좋을듯하네요.