金圈旅行家 宾得DA☆16-50 f/2.8评测(5)
分析成像色散时我们使用跟分辨率测试中相同的分析对象,这项值跟镜头素质有很大关系,该值越低越好。


成像色散是影响镜头分辨率,尤其是边缘区域分辨率的重要因素。SMC PENTAX-DA☆ 1:2.8 16-50mm ED AL [IF] SDM在广角和长焦端的大光圈下,边缘成像都有比较明显的径向色散,广角端的尤其明显。这些明显的色散可能会让广角端拍摄的照片中出现明显的彩色线条失真。
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