Ikon (also Icon): noun: A thing regarded as a representative symbol or as worthy of veneration: e.g. The Zeiss Ikon ZM is a modern representation of the iconic 35mm rangefinder cameras from the golden age of rangefinder photography of the 1940's, 50's and 60's.
Thus, quite intentionally by design, these cameras made between 2004 and 2012 looked and operated like a classic 35mm film rangefinder but with a number of significant modern improvements to make them more practical for every day use.
Such as a strong but lighter weight magnesium alloy all metal body sporting a vertically run, electronically controlled shutter with centre weighted, off the shutter metering.
Plus the option of aperture priority exposure control with up to +/- 2 stops of exposure compensation and exposure lock.
An extended base rangefinder calculated thus: starting with a BL of 75mm and a VM of 0.74x. giving an effective EBL of 55.5mm with a big, bright viewfinder with long eye relief for much more effective viewing and focusing.
A hinged, opening film back for simpler, faster and easier film loading.
Thus the Zeiss Ikon ZM is indeed iconic or ikonic if you prefer as it was intended to be by its designers, but it is also a very practical 35mm film rangefinder camera in the hands and thus a joy to use. As a result used ones in decent condition are hard to find especially ones in "minty" condition. So if you find a 'good un' at a sensible price, grab it.