Contax AX

Picture wanting to autofocus a Zeiss Planar that was never built to autofocus. Every other camera maker solved this by motorizing the lens. Contax solved it by motorizing the film. The AX moves the entire film plane back and forth on a sled inside the body, by a few millimeters of travel, so any old manual-focus Contax/Yashica lens you screw on suddenly has autofocus. Mount a 1975 Planar 50/1.4 and the camera focuses it for you. Nobody else ever did this, before or since, because nobody else was willing to rebuild the back half of a camera to dodge the obvious fix.

In the hand it is a tank. A metal body with titanium covers, heavy, dense, with a grip that feels carved rather than molded. The viewfinder is big and bright, with an AF-type focusing screen carrying focus brackets, and the focus confirmation (direction arrows and a circle) works whether you let the sled do the work or twist the focus ring yourself. Loading is conventional 35mm, drop and pull to the take-up. The shutter is a focal-plane unit running from 30 seconds out to roughly 1/6000, with flash sync near 1/200, and it fires with the solid, well-damped sound you expect from a body built this heavy. Metering is a TTL meter offering center-weighted average and a central spot, switched by a lever, feeding aperture-priority, shutter-priority, program and manual.

Where it struggles is exactly where its trick gets pushed. The film-plane autofocus is slow and it hunts, because shoving a sled is slower than spinning a light lens element, and at the limits of the sled travel you run out of focus range on close subjects. It is not a sports camera. It is also fussy and complex inside, which means a tired AX is an expensive AX, and the focusing sled is not something a corner shop will repair. People who buy one know what they are getting: a clever body with a single party trick, not a camera you grab when the moment is moving fast.

The buyers are Contax loyalists with a drawer full of Zeiss manual glass who wanted one body that could autofocus all of it, plus collectors who like that the thing exists at all. It cross-shops against the Contax RX and the autofocus N-series that came later with native AF lenses, and most working shooters went that route instead. The AX is the one you keep because of what it does, not because it does it well.

When the meter faces a backlit portrait or a stage lit hard from one side, even the spot read can pull you toward a compromise that blows the highlights or buries the face. That is the moment to take an incident or spot reading off the Zone Light Meter app, place the shadows on the zone you actually want, and dial that exposure in manually. The body's automation is fine for ordinary light; on the hard scenes you meter deliberately and let the AX do what it is uniquely good at, which is putting that old Zeiss glass in perfect focus by moving the film instead of the lens.