GOSSEN Photolux

Paul Gossen had a company manufacturing electrical meters in Erlangen, Germany. At Leipzig Fair, March 1933, Gossen introduced Photolux.

Photolux was smaller, lighter and cheaper than the meters manufactured so far in the USA, thanks to Gossen’s innovative solutions and good negotiation skills.


  1. -German version

  2. -German version for Leica (with Leica exposure time in scale)

  3. -French version (with french texts)

  4. -Possibly a version with english texts too

MÜLLER & ZIEGLER Electrophot

Another company that introduced a selenium exposure meter at Leipzig Fair was Müller & Ziegler, a manufacturer of electrical meters from Nuremberg. This is the only exposure meter model made by them. Apparently not many were sold, so this is quite a rare one.

(Simon A. Spaans)

Ad in ”Photofreund” 3/1933

Ad in ”Photofreund” 5/1933


Dr. Siegfried Guggenheimer manufactured metering equipment in Nuremberg. His first exposure meter Metrophot was announced in June 1933.

First Metrophots were all silver colored, but later models had a brown bakelite body with a calculator scale.

In December 1933 the name of the company would be changed to Metrawatt, and the meters to Metraphot.

Ad in ”Photofreund” 7/1933


  1. -4 s. version (longest exposure time in dial 4 seconds), all silver

  2. -8 s. version, all silver

  3. -8 s. version, brown body (first ad 10/1933)

  4. -16 s. version, brown body

  5. -Possibly also Kino version (apertures in the dial instead of seconds)


  1. -Some meters have H&D conversion table in the back

  2. -Different cine speed markings: ”1/32”, ”Gg16” or ”Gg” and numbers 8-64

- Different number layouts in dial, especially the placement of number ’8’ varies.

- Slight differences in the dial font

4 s. version

Silver body

Brown body

H&D conversion table

(It should also be noted, that Photofreund magazine, published in June 1933, claims that Guggenheimer announced two exposure meters called ”Amaphot” and ”Tamiphot” already at Leipzig Fair in March 1933. However, no other information has been found about those meters.)


Excelsiorwerk Rudolf Kiesewetter Meßtechnik was a company in Leipzig, Germany, manufacturing electronic measuring instruments. In autumn 1933 they announced the Photoskop K selenium meter. 


  1. -Original German version

  2. -German version with Leica scale

  3. -French version

  4. -French version with Leica scale

  5. -US version ”Photoscop”

  6. -Photoscop with Leica scale

Photoskop K - French version

Photoscop - US version


Exposure meter made for cine cameras by Weston. Introduced sometime in 1933, apparently before model 617-2.


  1. -With text ”For motion picture cameras”, smallest aperture 32

  2. -With text ”Cine exposure meter”, smallest aperture 40.

  3. -With text ”Cine exposure meter” and ”type 2”

  4. -”Filmo” version for Bell&Howell cameras

  5. -”Leicameter” version for Leica cameras

WESTON 617-2

Weston’s new, smaller version of 617 meter was introduced in late 1933.


  1. -Normal version

  2. -”Leicameter” version for Leica cameras

The normal version had two different back plates: One with instructions, scenes and filmspeeds (see the picture on the right), and another with empty white plate where you could write down emulsion speeds.


The August 1933 issue of a french magazine ”Revue Française de Photographie et de Cinématographie” has an ad of an electric exposure meter called Électro-Filmograph. So far no existing example has been found, so we don’t yet know for sure if it was really manufactured.


September 1933 Gossen released an improved meter. Outside it was similar to Photolux, but it was more sensitive. The price was dropped, and name changed to Ombrux.


There were at least 9 slightly different scales made:

  1. -German Scheiner ”bei f/9 u. 23° Scheiner”

  2. -French Scheiner ”pour f:9 et 23° Scheiner”

  3. -English Scheiner ”at f/9 and 23° Scheiner”

  1. -German DIN ”bei f/9 u. 15/16°/10 DIN (23° Sch.)”

  2. -French DIN ”pour f:9 et 15/16°/10 DIN (23° Sch.)”

  3. -English DIN ”at f/9 and 15/16°/10 DIN 23° Sch.”

  4. -Universal DIN ” 23° Sch. 15/16°/10 DIN”

  1. -UK version for f/8 (imported by Dallmeyer)

- OMBRUX f. LEICA with Leica speeds.

German Scheiner scale

UK version by Dallmeyer

The first Ombrux ad in Photofreund September 1933

GOSSEN Blendux

Together with Ombrux, Gossen introduced a version dedicated for cine camera work, called Blendux. It looked identical to Ombrux, except for the scale.


  1. -Original German text ”16 Bildwechsel=1/32 sec.”

  2. -UK version (imported by Dallmeyer)

German version

UK version