Looking toward my upcoming trip to Ann Arbor, I wanted to test out this Geiss-modified Argus C4 outfit.
Geiss was an after-market interchangable lens system offered to Argus C4 users in the 1950s. Owners sent their cameras in to have the mount installed by technicians, the camera then ready to accept an assortment of lens offerings.

I put together a kit including body serial number 0367170, 50mm Cintar lens, 35mm Lithagon wide angle lens, 100mm Lithagon tele lens, an Accurapid Wind accessary, and a Petri shoe mount variable frame finder.
Camera loaded with an old freezer stock roll of Fuji 100, I headed off to the Transportation Museum to enjoy a beautiful final day of Summer 2014.

Prior to the shoot, I had cleaned up and adjusted the camera, and fine tuned the focus calibration on the 50mm lens. That lens did just fine at the Museum.
For my test, I did a number of changes between the three lenses.
Seems to me that the wide angle and the tele lenses did not do as well as the 50mm, and the results were noticably softer to me. They might need to be recalibrated.

Images were hand held, but my hand is usually quite steady.

Please click on thumbnails to see enlarged.
All images are Copyright 2014 E.J.Kowalski.