九百万工业定焦镜头
9 mega is lens specification
● 支持900万像素 相机的高分辨率
● high performace for 5 mega piexl camera
● 较高的相对照度
● large aperture ratio for low illumination
● 低于0.2％的畸变
● free distortion less than 0.2％
● 0.1m至无穷远的聚焦范围
● focus range from 0.1m to infinity
● 大光圈适应各种低照度环境
● higher relative illuminate rate at corner
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