The Derby-Lux — made by Gallus of Paris, c.1945 — was a continuation of the 1930s German Foth Derby, whose production had been taken over by the Gallus company after Foth moved to France. Gallus changed the name in 1947 to the Derlux.
It is a strut folding camera with body and lens panel made of polished aluminium. Most examples have a Gallix 50mm 1:3.5 three-element focusable lens, made by Gallus itself; some have the well-regarded and faster Berthiot Flor f/2.8, or the Boyer Saphir f/3.5 or f/2.8. There are four windows, two red and two green, on the back for the 127 film, surrounded by a depth-of-field (profondeur de champ) table.
The speed of the focal plane shutter is controlled by the large knob on the top, marked from 1/25–1/500s + B.
- Vial, Bernard. Histoire des appareils français. Période 1940–1960. Paris: Maeght Éditeur, 1980, re-impressed in 1991. ISBN 2-86941-156-1.
- Derlux at Sylvain Halgand's www.collection-appareils.fr
- Gallus Derlux (Gallix) at Sylvain Halgand's www.collection-appareils.fr
- Derby Lux on www.collection-appareils.fr by Sylvain Halgand