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11支广角?真是拼了,佳能数款EF口镜头专利曝光

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就镜头开发而言,佳能已经全力以赴,因为专利局已经出现了大量的光学镜头设计专利信息。

这些是最新的EF镜头设计方案,它们可能是Cinema电影镜头。


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日本专利申请2019-066585

佳能EF 16mm f / 1.4

    焦距16.40mm 16.36mm 16.21mm
    F值1.45 1.45 1.45
    半场角52.84°52.84°52.84°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长98.97mm 98.65mm 97.42mm
    BF 38.50mm 38.83mm 40.05mm

佳能EF 20mm f / 1.4

    焦距20.50mm 20.45mm 20.26mm
    F值1.45 1.45 1.45
    半场角46.54°46.54°46.54°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长100.04 99.55 97.71
    BF 38.32mm 38.81mm 40.64mm

佳能EF 14mm f / 1.8

    焦距14.40mm 14.38mm14.29mm
    F编号1.83 1.83 1.83
    半场角56.35°56.35°56.35°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长88.57mm 88.32mm 87.42mm
    BF 38.79mm 39.04mm 39.94mm

佳能16mm f / 1.8

    焦距16.04mm 16.00mm 15.86mm
    F值1.83 1.83 1.83
    半场角53.45°53.45°53.45°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长94.99 94.67 93.46
    BF 38.80mm 39.13mm 40.33mm

佳能EF 17mm f / 1.8

    焦距17.16mm 17.14mm 17.06mm
    F值1.83 1.83 1.83
    半场角51.58°51.58°51.58°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长90.00mm 89.66mm 88.39mm
    BF 40.51mm 40.86mm 42.12mm

佳能18mm f / 1.8

    焦距18.81mm 18.75mm 18.52mm
    F值1.83 1.83 1.83
    半场角48.99°48.99°48.99°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长93.37mm 93.37mm 93.37mm
    高炉39.52mm 39.52mm 39.52mm

日本专利申请2019-066586

佳能EF 18mm f / 1.4

    焦距18.52mm 18.46mm 18.25mm
    F值1.31 1.31 1.31
    半场角49.44°49.53°49.85°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长106.98mm 106.51mm 104.95mm
    高炉38.97mm 39.44mm 41.00mm

佳能EF 20mm f / 1.4

    焦距20.50mm 20.45mm 20.26mm
    F值 1.45 1.45 1.45
    半场角46.54°46.54°46.54°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长100.04mm 99.55mm 97.71mm
    BF 38.32mm 38.81mm 40.65mm

佳能EF 14mm f / 1.8

    焦距14.69mm 14.68mm 14.64mm
    F值1.85 1.85 1.85
    半场角55.82°55.85°55.91°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长104.15mm 103.78mm 102.95mm
    BF 38.33mm 38.70mm 39.53mm

佳能EF 22mm f / 1.2

    焦距22.6mm 22.60mm 22.20mm
    F值1.24 1.24 1.25
    半场角43.63°43.75°44.27°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长107.46mm,106.9mm,104.5mm
    BF 38.32mm 38.88mm 41.28mm

佳能EF 24mm f / 1.2

    焦距24.10mm 24.03mm 23.69mm
    F值1.24 1.24 1.24
    半场角41.92°42.00°42.40°
    图像高度21.64mm 21.64mm 21.64mm
    镜头全长108.28mm 107.72mm 104.96mm
    BF 38.33mm 38.89mm 41.65mm


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