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 |
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