與Hektor 73mm f1.9及Thambar 90mm f2.2為三傑早期人像神鏡：Leica Summarex 85 1.5 LTM . Totally made 4342 units . This summarex SN 823167 dated 1950 was one of the rarest Leica len and when used f 1.5 will have very soft effect . Len in almost mint condition. Len only w rare original Leica hood, non Leica filter , LTM to M original Leica adaptor , back n front cover . Min 1 m focus . Original coating. The 元祖of Noctilux. Price firmed

日本人稱之為「最高の王」。Try to translate the main description from Japanese to Chinese :Ernst Leitz's Summarex is one of the brightest among the medium telephoto lenses of the time. The lens name is said to have the meaning of "Summa" 😊 best) "rex" 😊 king) in Latin. The number produced is small, 276 for black and only 4,066 for this type. Therefore, the real thing is rarely seen, and the prices of those sold on the web are soaring. Although I thought "someday ...", it was something I couldn't get my hands on.

the bokeh of this lens is so smooth that it melts, and you can feel the elegance of a "king". When squeezed to F2.8, the effect of vignetting disappears and the image becomes sharper.

Photo by Leica MP/ Kodak Gold 200/ f 1.5 bokeh(如詩如畫的夕陽及公園/ Kodak Tri-X 400

http://www.chapterlux.com/shop/leica-summarex-85mm-f1-5-ltm-8-5cm-823933/
https://www.meister-camera.com/en/product/leitz-summarex-m39-15-85mm-set/#tab-description
http://gadgetfo.blogspot.com/2014/04/shooting-with-old-glass-leica-85cm.html?m=1