A trio of Plaubel Makiflexes.
The final Swan Song of the Plaubel Camera Company, (in the early 1960's) was the reflex-SLR version Plaubel Makiflex. Here is my collection of Makiflexes, the two on the left, are the Automatic "Makiflex". Very similar to a European Auto Graflex, with automatic diaphragm mechanism. You cock the lens, and it stops down the lens right before exposure (hence "Automatic"). The Plaubel original lenses are the 180mm Schneider Xenar, and the 210mm F4.5 Schneider Xenar. On the right, is the "Makiflex Standard" with 150mm F2.8 Schneider Xenotar. This model has a more restricted range of shutter speeds, and no auto-iris provision.
These cameras are from what I call "The Golden Age of Photography".