Carl Zeiss Ikon ZM

Zeis Ikon ZM

The Zeiss Ikon ZM is a legendary modern rangefinder that dared to challenge Leica at its own game. Released to complement Zeiss's incredible line of ZM-mount lenses, the camera body itself was designed by Henssler & Schultheiss in Germany and precision-built by Cosina in Japan.

The ZM's greatest claim to fame is its massive, ultra-bright viewfinder. With a 0.74x magnification and a physical rangefinder baselength of 75mm, it achieves an effective baselength of 55.5mm (longer than a standard Leica M). This makes focusing fast lenses wide open incredibly accurate. Furthermore, the 28mm framelines have plenty of "breathing room" outside the frame, making it a joy for glasses wearers. Uniquely, while the framelines move to compensate for parallax as you focus closer, the central focusing patch remains completely stationary.

Internally, the camera uses an electronically controlled, vertical-travel metal focal-plane shutter. This gives it a blazing fast top shutter speed of 1/2000s (a full stop faster than standard cloth-shutter Leicas) and a flash sync speed of 1/125s. It offers both full manual control and Aperture Priority (AE) mode with an AE-lock button on the back.

To keep weight down, Zeiss opted to build the chassis from lightweight magnesium and aluminum rather than the heavy brass used by Leica. This makes the camera highly portable, though some purists noted it feels slightly less dense than an M7.

History

The ZM was the centerpiece of a massive early-2000s revival of the historic Zeiss Ikon brand.

The M-Mount Collaboration (2004 - 2005) After the discontinuation of the Contax G series, Zeiss wanted to re-enter the rangefinder market, but recognized that the Leica M-mount was the undisputed industry standard. Rather than reinventing the wheel, Zeiss partnered with Cosina (who had proven themselves with the Voigtlander Bessa series). Zeiss designed the optics, the quality control standards, and the aesthetic, while Cosina handled the manufacturing.

The Viewfinder Compromise To make the viewfinder as clean and uncluttered as possible, Zeiss made a deliberate choice to omit the 75mm and 135mm framelines entirely. The camera only displays lines for 28mm, 35mm, 50mm, and 85mm. Because 85mm is Zeiss's preferred portrait focal length (e.g., the Sonnar 85mm), it pairs perfectly with their proprietary lens lineup [1].

Legacy Despite rave reviews regarding its viewfinder and auto-exposure accuracy, the Zeiss Ikon ZM struggled against the prestige of the Leica brand. Production was officially halted in 2012. Today, it has achieved legendary status. Because it relies on electronics that are no longer supported by Zeiss/Cosina, buying one is a slight gamble, but those who own them swear it is the best AE rangefinder ever made [2].