I found this Kodak Duaflex at a garage sale recently. It has some scrapes and dents, but the lens is clear, the shutter works, and there are no light leaks. It took me a moment to recognize this camera as I was previously familiar with later models which are a bit larger and have more features. I thought it would be interesting to compare the Duaflex to the Panda, which was its nearest competitor in the immediate post-war American market.
Kodak stuck to what it knew with the Duaflex. The construction is similar to simple pre-war metal and bakelite designs with the primary innovation being the brilliant reflective viewfinder. The Kodet meniscus lens has good central sharpness which degrades rapidly toward the image edges. The flat film plane emphasizes the limitations of the simple lens design.
The Duaflex cost two or three times what was asked for the Ansco Panda. For that extra expense, you got shutter sync for a flash attachment, "I" and "B" shutter settings, a tripod mounting socket, and the possibility of using the slip-on No.6A Kodak Closeup Attachment. Like the Panda, and all of Kodak's medium format cameras of the era, the Duaflex required the use of 620 film.
Later Duaflex models added double-exposure prevention, variable f-stops, viewfinder hoods, and full-focusing multi-element lenses.
All of the Duaflex models have a rather awkward shutter release plunger. If you can manage to hold the camera still while releasing the shutter, quite nice results can be obtained.