Summitar* 2/5cm Chrome Prototype (THE FIRST ONE)
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SERIAL NO. 812242, 1950
Leitz Wetzlar rare original Summitar* lens. The Summitar* lenses can be considered as the first prototypes of what later turned into the Summicron design. Back in 1950, there were produced 88 examples of the Summitar* with serial numbers 812242-812329. The lens here is the very first one of the series. The asterisk after the lens name (not after the serial number) probably indicates the presence of a radioactive element. The general design of the optical computation was already very similar to the later Summicron. But the LaK9 (the first thorium-oxide free Lanthanium crown glass) of the 1953 Summicron was not yet available by 1950. Typically, the Summitar* lenses stop down to f/22, whereas Summitar as well as later Summicron stop down to f/16 only. This lens comes with front lens cap and keeper. This lens has been authenticated by Lars Netopil."
Summitar* 被視為Summicron生產前的的原型版，產於1950年，產量僅有88支，鏡頭編號由812242至812329；此鏡頭是第一支生產的Summitar*，收藏價值極高。名字後的「*」代表玻璃加入了放射性元素。Summitar*與Summicron的不同之處在於Summitar*沒有使用LaK9玻璃及其最小光圈為f/22，除此之外其光學設計光學設計已跟Summicron非常接近。James Lager Vol. II p.45-47記錄了此款鏡頭的資料。此拍品連鏡頭前蓋及膠盅，經由Lars Netopil鑑定。
Leitz Wetzlar rare original Summitar* lens. The Summitar* lenses can be considered as the first prototypes of what later turned into the Summicron design. Back in 1950, there were produced 88 examples of the Summitar* with serial numbers 812242-812329. The lens here is the very first one of the series. The asterisk after the lens name (not after the serial number) probably indicates the presence of a radioactive element. The general design of the optical computation was already very similar to the later Summicron. But the LaK9 (the first thorium-oxide free Lanthanium crown glass) of the 1953 Summicron was not yet available by 1950. Typically, the Summitar* lenses stop down to f/22, whereas Summitar as well as later Summicron stop down to f/16 only. This lens comes with front lens cap and keeper. This lens has been authenticated by Lars Netopil."
Summitar* 被視為Summicron生產前的的原型版，產於1950年，產量僅有88支，鏡頭編號由812242至812329；此鏡頭是第一支生產的Summitar*，收藏價值極高。名字後的「*」代表玻璃加入了放射性元素。Summitar*與Summicron的不同之處在於Summitar*沒有使用LaK9玻璃及其最小光圈為f/22，除此之外其光學設計光學設計已跟Summicron非常接近。James Lager Vol. II p.45-47記錄了此款鏡頭的資料。此拍品連鏡頭前蓋及膠盅，經由Lars Netopil鑑定。
Condition
A-/ B+
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Summitar* 2/5cm Chrome Prototype (THE FIRST ONE)
Estimate HK$120,000 - HK$180,000
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