Canon News发觉了一项新的RF接口光学设计专利,该专利显示信息各种各样不一样设计方案的RF17-70mm f / 3.5-5.6。 因为选用可变性焦距,这看上去像某类广角镜头调焦套机镜头。
下列是三个执行例:
佳能RF 17-70mm f / 3.5-5.6
焦距:17.40mm 35.02mm 68.69mm
F值:r 3.57 4.18 5.85
半角度:51.19°31.71°17.48°
图象高度:21.64mm 21.64mm 21.64mm
镜头总长度:149.59mm 133.68mm 150.50mm
BF:13.43mm27.63mm 57.99mm
佳能RF 17-70mm f / 3.5-5.6
焦距:17.10mm 34.82mm 72.70mm
F值:r 3.57 4.18 5.85
半角度:51.68°31.85°16.57°
图象高度:21.64mm 21.64mm 21.64mm
镜头总长度:151.00mm 135.57mm 157.71mm
BF:13.13mm 27.81mm 63.49mm
佳能RF 18-80mm f / 3.5-5.6
焦距:18.70mm 37.55mm 77.50mm
F值:3.57 4.18 5.85
半角度:49.16°29.95°15.60°
图象高度:21.64mm 21.64mm 21.64mm
镜头总长度:146.50mm 128.90mm 147.50mm
BF:15.19mm 27.72mm 59.84mm
文章正文:Patent: Canon RF 17-70mm f/3.5-5.6
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