理光发布HD PENTAX-D FA★ 70-200/2.8 ED DC AW全画幅镜头-快科技-科技改变生活

理光发布HD PENTAX-D FA★ 70-200/2.8 ED DC AW全画幅镜头

快科技
2015年02月05日 10:43
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理光株式会社欣然宣布推出适用全画幅传感器的新款宾得星镜HD PENTAX-D FA★ 70-200mm f/2.8 ED DC AW，新镜头加入了最新开发的“Aero?Bright?Coating II”和HD等镀膜技术，最大尺寸91.5×203mm，滤镜口径77mm，重约1755g，售价30万日元，约合1.56万人民币。

镜头采用16组19片光学结构，9叶片圆形光圈，最近对焦距离1.2m。除了4片异常低色散玻璃镜片和2片（ED）超低色散玻璃镜片外，又添加了2片超级超低色散玻璃镜片，使整个变焦范围内得到有效补偿色差。

镜筒在变对焦过程中体积不会发生变化，内部有13处防尘防滴溅处理，可提高镜头的在天气恶劣环境下的可靠性和耐久性。搭载全新快速对焦切换系统，无需手动操作即可在自动对焦和手动对焦间自由切换，支持自动对焦后手动对焦或自动对焦过程中手动介入。镜筒一侧配备3组阶梯式对焦限定开关，可有效缩短自动对焦时间。新的脚架环设计，无需拆下机身即可安装。

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