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太精彩了！
精华！！
Leica M Summicron 50mm F2.0――最出色、最佳入门Leica镜头
Leica M Summicron 50mm F2.0是绝大多数人的Leica入门镜头，被称为全世界最出色的F2.0标头。
镜头结构：6片/4组
最小光圈：F16
滤镜直径：39mm
外观尺寸：53.0x43.0mm
重量：240g
这一镜头也有多个版本，在Leica M卡口镜头详谈中有着重讲解，本帖主要讨论1995年开始投产的第六版：镜筒印有“50”，内置遮光罩，无对焦拨杆，黑色重240克、银色重333克。
评价：
Louis.Lam Said：
总评： One of my main reason for entering the Leica M-system, the other is the f/1.0 Noctilux. One of the “REFERENCE CLASS” 50mm lens in the world. Many are even being used for calibration standard for other photographic 50mm lens in the production line.
优点： -Very Good color rendition.
-Lucid clarity and very good contrast (at f/5.6-8).
-Very low coma at night shots.
-Very low linear distorsion.
-Very very low flares and chromatic errors.
-Near field performance is as good as far field.
缺点： -Build in hood is not as good as the former version.
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