Shutter Button

開發工作於 2009 年啟動，第一個版本採用了 2mm 和 4mm 變化的直紋紋理。2013年推出的第二個版本經過優化和重新設計，其特色為復刻1:1 Leica M2 和 M3 的菱形格紋與螺紋精度。

Starting in 2009, the development began with the first version featuring a striped texture with 2mm and 4mm variations. In 2013, the second version was improved and redesigned to feature a Leica M2 & M3 diamond pattern.