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Gossen Photolux exposure meter.
The Photolux exposure meter, made by P. Gossen & Co, Erlangen Bayern,
Germany is the first exposure meter made by this company. Paul Gossen
based his company of exposure meters on this product. In several
documentation the 'Photolux' meter is mentioned in the period 1932 -
1933. In Photofreund 13 page 335 of 20 September 1933 there is an
article with the title "Wider development in photocell exposure meters"
by H. hansen; The Photolux exposure meter has been increased in
sensitivity to enable measurement of interior lighting and the has been
changed to "Ombrux".
In an another article of "Nachrichtenblatt fur das photografenhandwerk
vol 39-40, 1932 page 37" we find the description of use of this meter: '
Das instrument (Photolux) zeigt die belichtungszeit fur blende f 9 und
fur negativmaterial von 23 Scheiner." This means the specification of
the meter is aperture f 9 with negative material with a sensitivity of
23 Scheiner. The article describes further how to use the meter to
determine the exposure time.
At the original website of Gossen Germany at
http://www.gossen-photo.de/english/foto_sammler_chronologie.html ,
we see that the Photolux meter is chronological dated at 1934 but this
is not correct, because there was already an advertisement about the Photolux meter
at may 15, 1933
in the 'Photographische Rundschau Und Mitteilungen' as the
Photolux from Original Gossen (photographic Lux meter) on December 15,
1933.
Also there is an article of the Photolux meter in on page 221 the Hans Porst
Catalog dated 1933 . On September 15, 1933 there is another
advertisement of a meter with the same look and feel but now with the
name Ombrux, the meter that has been announced on the fair at the
"Leipziger Messe".
There is some other information about name Photolux
that is found in the Thiele
edition 2001page about a company located in the Jordanstrasse 6 Dresden
Germany called Photolux making electrical exposure meters. This company
started in 1928 end ended his existence in 1935.
"Photolux, Belichtungsmesser GmbH, Dresden, Industriegelände
Albertstadt.
Die Gesellschaft wurde 1928 eingetragen. Photolux fertigte elektrische
Belichtungsmesser. Am 23. Februar 1935 wurde die gesellschaft. die sich
zu dieser Zeit in der Jordanstrasse 6 befand, aufgelöst."
Some sentences from german documents:
Book: Gebrauchsfotografie, Das atelier des fotografen vol.39-40 1932;
".....einem "Photolux bestimmt wurde"
Book: Quellendarstellungen zur geschikte der fotografie; " ..... Bruno
Lange im zusammenarbeit mit der firma P. Gossen, Erlangen. 1932 gebaute
'Photolux' derzeit fruhjahr 1933 fur 26,50 RM kauflich war.
Book: Nachrichtenblatt fur das Photographenhandwerk vol 39-40
(39,40,1032) pag. 37; "Das instrument zeigt der belichtungszeit fur
blende F9 und negative materiaal von
23˚ Scheiner. Die ergebnisse fur andere belichtungszeiten sind durch
ubersichtliche tabellen leicht fest zu stellen. Der Photolux wird
seitlich der kamera in richtung des objektes gehalten wonach die
belichtungszeit ohne weiteres ab zu lesen ist."
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(The Ombrux manual does apply)
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