Triple Extension Field - Antique and Vintage Cameras

Triple Extension Field Camera

c. 1904

Image of Triple Extension Field Camera

Lens:
f8, 8 " rapid rectilinear, iris diaphragm with external pointer.

Shutter:
Roller-blind, speeds 1/15 - 1/90, T, B. Pneumatic and string release.

Construction:
Polished mahogany with brass fittings, finger joints. Diagonal cornered leather bellows.

Format:
6 " x 4 " plates held in double dark-slides.

Focusing:
Bellows to 36".

Attributes:
Rack and pinion adjustment to outer rack which moves the rear standard. Rack and pinion movement to inner frame which moves the front standard. Removable lens panel. Plumb bob. Turntable in base.

Movements:
Rising front, tilting front, tilting back.

At the turn of the century a number of triple extension field cameras were produced. Models similar to the example shown here were produced by various companies including - Butcher as the National, Service Co. and City, Sale & Exchange. It is simply made using very thin brass for the fittings. The front standard has elaborate movements with double rise and tilt movement. The shutter is notable for not being by Thornton-Pickard.

References & Notes:
BJA 1904, p. 216. BJA 1905, pp. 195, 1341, 1490.

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