The Exa is a 35mm SLR developed by Ihagee, and is a simple but reliable version of the Exakta. It has a simple guillotine shutter in place of the Exakta's focal plane shutter. Despite the slow maximum shutter speed this leads to, the Exa cameras were well designed for ambitious amateurs. The cameras have interchangeable waist-level and prism viewfinders and were sold with lenses by Ludwig, Meyer or Carl Zeiss. Later models have fixed viewfinders but faster shutters. Some early Exas were made by Rheinmetall, and some late ones by Certo.
- Allinson, K. L. Exa Photography Technique And Practice. Morgan Publishing, 1965. ASIN B000S2ZNSY.