Summicron-M 50mm f/2（1969–2023）
别名 "Summicron 50 v3", "Summicron 50 v4", "Summicron 50 v5"
第三代 Summicron（v3，1969 年）确立了现代标准：6 片 4 组设计，紧凑、精密、从最大光圈起即表现卓越。此后的 v4 和 v5 在此基础上持续精进，v5 针对高分辨率数码传感器优化，同时保留了 Summicron 标志性的色调特质。对新手而言：50mm Summicron 是徕卡镜头体系的基准——不是最快的，也不是最锐的，但它以最自然、最完整的方式还原场景，是徕卡摄影中"标准"的定义。
主要参数
- focal length
- 50mm
- max aperture
- f/2
- elements
- 6 elements in 4 groups (v3/v5)
- filter
- 39mm
- mount
- Leica M
版本与涂装
Second version of the modern 50 Cron: a compact collapsible-style barrel replaced by a proper focusing tab and standard 39mm filter thread. The starting point for most collectors of the modern series.
Leica integrated a built-in telescoping lens hood, removing the need to carry a separate hood. Beloved for convenience; slightly longer than V2 when hood is extended.
Final current version: the built-in hood became a removable screw-in hood and the focus tab came back. The most refined version optically and the easiest to find new or lightly used.
市场行情
二手市场价格（美元，估算中位数）
数据来自拍卖与经销商记录估算，成色与配件差异较大。
查看数据
| Date | Price | Source | Condition |
|---|---|---|---|
| 2016-01 | $1,100 | Dealer Median | Good |
| 2020-01 | $1,350 | Dealer Median | Good |
| 2026-01 | $1,600 | Dealer Median | Good |
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