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佳能新大炮专利曝光 涉及220、328、540等多个镜头

佳能新大炮专利曝光 涉及220、328、540等多个镜头

Napoleon Chan / 2022-04-25 10:43:1241259

日前,佳能多个大炮专利曝光,当中涉及到了600mm F4、400mm F2.8、500mm F4、800mm F5.8、300mm F2.8以及多个200mm F2多个规格镜头。

根据佳能专利描述,长焦镜头在对焦时第二组镜头会进行运动,但是第二组镜头过于靠近第一组镜头,因此无法减少镜头重量与尺寸,为了解决这一问题,佳能设计了一个新光学结构,用以降低长焦镜头重量,同时提供能很好校正色差与像差,拥有出色的成像质量。基于这一光学结构,共衍生出600mm F4、400mm F2.8、500mm F4、800mm F5.8、300mm F2.8以及多个200mm F2多个规格镜头,其中600mm F4、400mm F2.8、500mm F4、800mm F5.8、300mm F2.8拥有极为相似B1组设计。

在去年开始,佳能就开始发力RF卡口长焦镜头,推出了RF400mm F2.8 L IS USM、RF600mm F4 L IS USM两支镜头,今年再接再厉推出了RF800mm F5.6 L IS USM、RF1200mm F8 L IS USM,让RF卡口一举成为拥有最多原生大炮最多的卡口。然而前两支镜头是属于EF卡口焊接屁股,后面两支镜头是前面两支镜头焊接增倍镜版本,因此饱受争议,佳能急需推出真正的原生RF卡口大炮来证明自己的实力和诚意。



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