佳能多款RF卡口镜头设计专利曝光

　　　就镜头开发而言，佳能已经全力以赴，专利局中除了大量EF镜头专利还有众多RF镜头专利。

日本专利申请2019-066701

佳能RF 15-35mm f / 2.8L

焦距15.30mm 24.20mm 34.00mm
F值2.91 2.91 2.91
视场角54.73°41.80°32.47°
图像高度21.64mm 21.64mm 21.64mm
镜头全长135.05mm 125.84mm 125.33mm
BF13.00mm 22.20mm 32.26mm

佳能RF 17-70mm f / 3.5-5.6

焦距17.3mm 35.00mm 68.00mm
F值3.58 4.18 5.85
视场角51.35°31.72°17.65°
图像高度21.64mm 21.6mm4 21.64mm
镜头全长142.70mm 138.53mm 143.42mm
BF 13.32mm 29.60mm 57.62mm

日本专利申请2019-066654

佳能RF 15-35mm f / 4L

焦距15.45mm 24.00mm 34.00mm
F值4.12 4.12 4.12
半场角54.47°42.03°32.47°
图像高度21.64mm 21.64mm 21.64mm
镜头全长125.38mm 119.21mm 116.89mm
BF 12.00mm 19.66mm 24.40mm

佳能RF 16-35 f / 4L

焦距16.48mm 24.00mm 34.00mm
F值4.12 4.12 4.12
半场角52.70°42.03°32.47°
图像高度21.64mm 21.64mm 21.64mm
镜头全长127.27mm 116.39mm 111.30mm
BF 10.95mm 16.82mm 23.58mm
日本专利申请2019-066653

佳能RF 14-40mm f / 4L

焦距14.43mm 21.62mm 40.74mm
F值4.12 4.12 4.12
半场角56.30°45.01°27.97°
图像高度21.64mm 21.64mm 21.64mm
镜头全长138.31mm 128.15mm 129.29mm
BF 12.84mm 12.84mm 12.84mm

佳能RF 16-40mm f / 4L

焦距16.41mm 23.12mm 38.80mm
F值4.12 4.12 4.12
半场角52.82°43.10°29.14°
图像高度21.64mm 21.64mm 21.64mm
镜头全长118.88mm 112.53mm 114.89mm
BF 12.78mm 12.78mm 12.78mm