Le Chronopose Exact - Antique and Vintage Cameras

Le Chronopose Exact

c. 1910

Image of Le Chronopose Exact

Meter Type:
Actinometer.

Calibration:
Shutter speed: 1/100 - 64s. Aperture: f3 - f144.

Notes:
Agents address: City Sale & Exchange. 81 Aldersgate St. 54 Lime St. 105 Cannon St. 13 Arcade. Liverpool St. 26 & 28 Kings Rd. 90-94 Fleet St. (1919 - 1922).

With:
Instructions. Plate speed list. Packet of sensitive paper. Box.

References & Notes:
Ganzini Cat 1926, p. 92. Kodak Museum Catalogue, p. 15.

Le Chronopose Exact

Meter Type:
Actinometer.

Calibration:
Shutter speed: 1/100 - 64s. Aperture: f3 - f144.

With:
Instructions (French). Packet of sensitive paper. Suede pouch.

Marked "Congress of Paris 1900". In use the light is measured in the normal way. The meter carries scales - F/n for f numbers and plate speeds; T for shutter speed and actinometer value. The number of the plate speed in column F/n is set against the actinometer value. The shutter speed and aperture pairs can then be read.

Haka Expometer

Meter Type:
Actinometer.

Calibration:
Film speed: 8 - 21.5° Scheiner. Shutter speed: 1/250 - 240s. Aperture: 3.2 - 64 Dr. Rudolph (continental f numbers), 2.8 - 50 Relative (f numbers), 1 - 384 Stolz (Goerz), 2 - 128 Englische (US).

Attributes:
Subject scale.

With:
Packet of sensitive papers.

Made in Germany.

Universal Exposure Meter

c. 1901

Dr. J.H. Smith & Co.

Zürich

Switzerland

Meter Type:
Actinometer.

Calibration:
Plate: 1 - 20 Smith values. Shutter speed: 1/8000 - 22s. Aperture: f1 - f861.

Attributes:
Actinometer value: ¼ - 90. Plate conversion table for Smith values to: 1 - 20 ½° Scheiner; 2 - 960 H&D; 8 ½ - 29 Warnerke.

Notes:
Price 1/6.

In use the actinometer time is found by exposing sensitive paper and matching against a standard tint. A ribbon is then moved to align the plate speed with the actinometer time. The shutter speed and aperture pairs can then be read. Six columns of shutter speed are given for different classes of subject. The meter card is contained in a cover which carries a conversion table of Smith plate speeds to Scheiner, H&D and Warnerke. A table of shutter speeds to stop motion is also shown.

References & Notes:
BP 1145/1902.

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Le Chronopose Exact
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