The Dallmeyer Dual is a 4.5×6 folding camera, sold in 1931. It has an unusual aspect, with vertically oriented barn doors and a lens plate mounted on scissor struts. The lens and shutter unit is mounted on a focusing helical. The lens is a Dallmeyer Dalmac Anastigmat 3" f/3.5, and the shutter is a rimset Compur (T, B, 1–250, self-timer). The duralumin body is leather covered, there is a folding frame finder and a folding leg with a curved shape.[1]

Serial numbers:

  • s/n D109, lens no.143137[2]
  • s/n D125, lens no.143365[3]
  • s/n D154, lens no.143852[4]
  • s/n D210, lens no.145891[5]


  1. Duralumin body: Channing and Dunn, p.40.
  2. Observed in an online auction.
  3. Lot no.710 of Westlicht auction no.11 (26 May 2007).
  4. Lot no.312 of Christies auction "Cameras and Optical Toys" (11 March 1993), then lot no.802 of Westlicht auction no.9 (20 May 2006).
  5. Observed in an online auction.



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