Diaphot - Antique and Vintage Cameras

Iconta

1922

Ica

Dresden

Germany

Image of Iconta

Meter Type:
Extinction.

Calibration:
Shutter speed: 1/1000 - 1m 30s. Aperture: f4.5 - f25.

Identification:
With Ica star on face, 'Iconta' on rear.

With:
Black leather case.

Diaphot

Early Zeiss model

1926

Zeiss-Ikon A. G.

Dresden

Germany

Meter Type:
Extinction.

Calibration:
Shutter speed: 1/2000 - 1m 30s. Aperture: f3.5 - f25.

Identification:
With Ica star on face, Zeiss logo on rear.

With:
Black leather case.

Diaphot

Late Zeiss model

Meter Type:
Extinction.

Calibration:
Shutter speed: 1/2000 - 1m 30s. Aperture: f3.5 - f25.

Identification:
Without Ica symbol.

With:
Brown leather case.

A very simple disc type extinction meter. The subject is viewed through the eye-piece, turning the rim of the case causes a variable density wedge to rotate across the field. At the indistinct point the shutter speed and aperture pairs can be read on the front of the meter. A blue glass filter is used to view the subject.

References & Notes:
BJA 1924, p. 714. BJA 1925, p. 337. BJA 1927, p. 711. BJA 1928, p. 682. Ganzini Cat. 1926, p. 91.


Company Details:

Ica

Extinction

Photometre
Le Photometre Normal

Heyde

Diaphot

Wellington, McMurtry, Low's

Justophot

Lios Actinometer, Lios Scop

Practos

Dremoscop, Leicascop
Instoscope

Bewi

Leudi, Imperial, Pierce
Hauff, Expophot

Corfield
Nebro Visual
Ludac

Addiphot, Addex
Perfectus

Pelmet, Plex, Rollei


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