Kaufmann Posographe 光度计
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卖家的描述
Kaufmann Posographe – 古董法国摄影曝光计算器（约1900–1925）
Description
罕见且原装的 Posographe，由 Kaufmann 制造，产地法国普托（Puteaux），约1900–1925年。
这款巧妙的曝光计算器是在手持光度计发明之前为摄影师设计的，允许他们确定玻璃版与早期胶片的正确曝光时间。
The Posographe provides detailed guidance (in French) for both indoor and outdoor photography, taking into account:
Aperture / diaphragm values
Subject type (portraits, flowers, details, etc.)
Light conditions (sun, shade, cloudy, interior lighting)
Window type (ordinary, double, large glazing)
Sky color and brightness (stormy, cloudy, blue sky, very clear)
The tool is mounted in a metal frame with sliding and rotating indicators, allowing the photographer to quickly adjust exposure depending on real conditions.
At the bottom is the maker’s inscription:
“POSOGRAPHE. Breveté S.G.D.G. Kaufmann, Constr. 11 rue de la République, Puteaux.”
Details
Maker: Kaufmann (Puteaux, France)
Model: Posographe
Period: Circa 1900–1925
Language: French
Material: Metal frame with printed exposure charts and movable indicators
Dimensions: Aprox: 13cm x 8cm
Condition: Good antique condition with age-related patina. Fully legible and complete (see photos).
Rarity & Collectibility
Kaufmann’s Posographe is highly sought after by collectors of antique cameras and early photographic accessories. It represents a fascinating piece of the history of photography, bridging the gap between guesswork and the invention of modern light meters.
Provenance
Private collection, France.
Shipping
Securely packaged and shipped with tracking.
Kaufmann Posographe – 古董法国摄影曝光计算器（约1900–1925）
Description
罕见且原装的 Posographe，由 Kaufmann 制造，产地法国普托（Puteaux），约1900–1925年。
这款巧妙的曝光计算器是在手持光度计发明之前为摄影师设计的，允许他们确定玻璃版与早期胶片的正确曝光时间。
The Posographe provides detailed guidance (in French) for both indoor and outdoor photography, taking into account:
Aperture / diaphragm values
Subject type (portraits, flowers, details, etc.)
Light conditions (sun, shade, cloudy, interior lighting)
Window type (ordinary, double, large glazing)
Sky color and brightness (stormy, cloudy, blue sky, very clear)
The tool is mounted in a metal frame with sliding and rotating indicators, allowing the photographer to quickly adjust exposure depending on real conditions.
At the bottom is the maker’s inscription:
“POSOGRAPHE. Breveté S.G.D.G. Kaufmann, Constr. 11 rue de la République, Puteaux.”
Details
Maker: Kaufmann (Puteaux, France)
Model: Posographe
Period: Circa 1900–1925
Language: French
Material: Metal frame with printed exposure charts and movable indicators
Dimensions: Aprox: 13cm x 8cm
Condition: Good antique condition with age-related patina. Fully legible and complete (see photos).
Rarity & Collectibility
Kaufmann’s Posographe is highly sought after by collectors of antique cameras and early photographic accessories. It represents a fascinating piece of the history of photography, bridging the gap between guesswork and the invention of modern light meters.
Provenance
Private collection, France.
Shipping
Securely packaged and shipped with tracking.
详细资料
时代
1900-2000
品牌
Kaufmann
Model/type nr
Posographe
外观状况
很好
功能状况
经测试，运转正常
推算时期
1900-1910, 1920-1930
