Griffin's - Antique and Vintage Cameras

Griffin's Combined Exposure and Development Calculator

John J. Griffin & Sons Ltd

London

England

Image of Griffin's Combined Exposure and Development Calculator

Meter Type:
Calculator.

Calibration:
Plate speed: 3 - 600 H&D. Shutter speed: 1/400 - 6s. Flash powder: 7 ½ grains - 6 oz. Aperture: f2.9 - f64, 1 - 256 US.

Attributes:
Settings for - Hour of day, month. Sky conditions. Subject.

In use a table showing the month and time of day provides a light value (A - J). On the first slide of the calculator the sky condition is aligned with the A - J value. On the second slide the plate speed is aligned to the subject. The shutter speed and aperture pairs can then be read. There is also a scale for flashlight work showing distance and giving grains of flash powder to be used rather than shutter speed.

A separate calculator is used for development: the plate class (A - E) is set against the subject type. The development time is then shown for different temperatures. Two scales are shown for tank or dish work.

The scales were arranged by P.H. Dawson. The price was 1/-.

Universal Exposure Meter

Dr. J.H. Smith & Co.

Zürich

Switzerland

Meter Type:
Calculator.

Calibration:
Plate: Blue, Brown, White, Yellow, Red, Green (this refers to the labels on Smith plates). Shutter speed: 1/4000 - 768m. Aperture: f1.4 - f430.

Attributes:
Settings for - Time of day, month. Sky conditions. Subject. Plate conversion table for Smith values to: a - c, 1 - 20° Scheiner, 3.2 - 510 H&D, 11 - 28 Warnerke.

Notes:
Price 1/-.

A table is used to provide a light value index based on time of day, month and sky conditions. This is adjusted for the type of subject. A ribbon is moved to align the light value index to the plate speed in use (shown by colour of label on the box). The shutter speed and aperture pairs can then be read. The meter card is contained in an envelope which includes a plate speed conversion table.

Voigtländer Exposure Meter

Voigtländer & Sohn

Braunschweig

Germany

Meter Type:
Calculator.

Calibration:
Plate speed: 50 - 4000 H&D, 10 - 28° Scheiner. Shutter speed: 1/4000 - 12m. Aperture: f2 - f32.

Construction:
Cardboard with one sliding scale.

Attributes:
Settings for - Time of day, time of year. Light condition (sky). Subject. Result shows shutter speed and aperture pairs.

With:
Wallet.

Voigtländer Exposure Meter

Voigtländer & Sohn

Braunschweig

Germany

Meter Type:
Calculator.

Calibration:
Plate speed: 17 - 11000 H&D, 5 - 32° Scheiner, 7 - 22 DIN. Shutter speed: 1/4000 - 9m. Aperture: f2 - f72.

Construction:
Cardboard with one sliding scale.

Attributes:
Settings for - Time of day, time of year. Light condition (sky). Subject. Result shows shutter speed and aperture pairs.

Voigtländer Exposure Meter

Voigtländer & Sohn

Braunschweig

Germany

Meter Type:
Calculator.

Calibration:
Plate speed: 17 - 11000 H&D, 5 - 32° Scheiner, 7 - 22 DIN. Shutter speed: 1/4000 - 9m. Aperture: f2 - f72.

Construction:
Cardboard with one sliding scale.

Attributes:
Settings for - Time of day, time of year. Light condition (sky). Subject. Result shows shutter speed and aperture pairs.

With:
Slip case.

Agfa Exposure Tables

c. 1909

AGFA

Berlin

Germany

Meter Type:
Calculator.

Calibration:
Plate speed: 40 - 650 H&D, 2 - 500 Watkins. Shutter speed: 1/1000 - 216s. Aperture: f3.5 - f96.

Attributes:
Settings for - Hour, month. Subject. English text.

Agfa Exposure Tables

Meter Type:
Calculator.

Calibration:
Plate speed: 40 - 650 H&D, 2 - 500 Watkins. Shutter speed: 1/1000 - 216. Aperture: f3.5 - f96.

Attributes:
For 50° North. English text. Settings for - Time of day, month. Subject. Flashlight table combines distance and aperture giving grams (of powder) for particular plate speed.

A simple cardboard calculator produced for a number of years. Variations have Scheiner plate speeds. In use the hour is set against the month. The plate speed then points to a light value. The subject is aligned to the light value. The shutter speed and aperture pairs can then be read.

Belichtungs:Zählwerk

1930s

Lindner G.M.B.H.

Berlin-Schöneberg

Germany

Image of Belichtungs:Zählwerk

Meter Type:
Calculator.

Calibration:
Plate speed: 10 - 20 DIN, 17 - 30° Scheiner. Shutter speed: 1/1000 - 32s. Aperture: f1.4 - f32.

Notes:
Retailer: Photohaus A. Hosbach. Berlin.

The meter consists of a number of tables each of which provides a value, the values from each table are added together and set on the dial at the top of the meter, the shutter speed and aperture pairs can then be read. The tables are: Time of day/Month, Subject, Film speed, Light conditions, Filter in use.

Rapid Belichtungs-Zählwerk

1930s

Lindner G.M.B.H.

Berlin-Schöneberg

Germany

Meter Type:
Calculator.

Calibration:
Plate speed: 9 - 24 DIN. Shutter speed: 1/1000 - 1m. Aperture: f1.5 - f32.

Notes:
Retailer: Photo-Görlich. Villach.

The subject is set against the time day/month, adjustments can be made for the filter in use and the condition of the sky. On the reverse there is a calculator for artificial light.


Company Details:

Griffin & Sons

Tables & Calculators

H&D Actinograph

Phillips
Dibdin's Automatic
Lambert & Cadett's
W. Tylar

Ilford Meter

Imperial Exposure Reckoner

Griffin's, Smith
Voigtländer, Agfa, Lindner

Imperial, Ilford
Dufay, Kodak

Wellington Exposure Disc
Cheape, Posometer
Exposure Records

Posographe

Wellcome Calculator

Nebro, Fotogram
Pathéscope, Lighting Guide

Johnson's


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