The EXAs

These are two EXA SLR cameras, cheaper models of the Exakta camera series made by Ihagee in Dresden, East Germany.

Exa 1a and Exa camera

The Exa with the Meyer Optik Trioplaan 100mm.f2.8

They all use interchangeble lenses, and have a guillotine type shutter that has the mirror on. In order to compose from the waistlever viewfinder you have to arm the shutter using the film advance lever or knob.
Shutter speeds are few, 1/150, 1/100, 1/50, 1/25 and B.
I bought the cameras in Vienna that have a Ludwig Meritar 50mm/f2.9 lens, together with a Trioplan 100mm telephoto lens. Unfortunately only the EXA works.

Exa 1a, with the interchangeable waist lever viewfinder