佳能全画幅EF 20-45mm F2.8-4镜头专利。

佳能全画幅EF 20-45mm F2.8-4镜头专利。专利公开号2015-197593,公开日期2015.11.09,申请日期2014.04.01。变焦比2.25;焦距20.00–23.60–45.00mm;光圈2.75–2.90–4.16;像高21.64–21.64–21.64mm;后焦距42.05–46.10–73.14mm;半画角47.25° – 42.51° – 25.68°;全长158.28–156.32–173.36。消息连接:http://www.camerabeta.com/rumor/canon/canon-ef-20-45mm-f2-8-4-lens-mm-f2-8-4-lens-patent/1331


佳能全画幅EF 20-45mm F2.8-4镜头专利。_第1张图片

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