Carl Zeiss Apo-Makro-Planar T* 120mm f/4 (645)

Two Zeiss lenses share almost the same name. Hasselblad's V system has a Makro-Planar 120mm f/4 for the 6x6 bodies; Contax built this one for the 645. Same design house, same focal length, same maximum aperture. The difference is the word Apo. Zeiss added apochromatic correction to the 645 version, which pulls the color channels into closer agreement and cleans up the secondary chromatic aberration that creeps in along high-contrast edges at close focus. The Hasselblad lens is fine glass, but it is not apo, and on demanding close work that gap shows.

Wide open at f/4 it is already biting sharp across the center, which is unusual for a macro lens that has to cover the full 645 frame. Stop to f/8 and the corners catch up completely. Contrast is high in the Zeiss way, deep blacks, color that leans saturated without tipping into garish, and the T* coating keeps flare controlled even with a light source clipping the corner. Backgrounds render smooth and a little clinical. This is not swirly, characterful blur. It is orderly falloff, exactly what you want isolating a ring on a hand or a leaf against open shade.

The Contax 645 became the film wedding camera, the body working portrait shooters kept loading long after Kyocera shut the system down in the mid 2000s. Most of them lived on the 80mm f/2 Planar, but the 120 Apo-Makro-Planar earned its place for detail work and tight head shots, where you want compression and resolution at once. Here is the part newcomers underestimate. The 645 is an autofocus system and this lens will autofocus with the body, but for close macro work most shooters switch it to manual and set focus by hand, frame by frame.

The honest limit is speed and pace. f/4 is slow for a portrait lens, so in dim receptions you are metering near wide open and leaning on fast film to hold a shutter speed. The manual throw is long and deliberate, especially as you rack out toward life size, which is slow but precise once you settle into it. And close focus eats light the way every macro does. As you extend toward maximum magnification the effective aperture drops well below the marked f/4, which is where bellows compensation matters; Zone Light Meter computes the extension factor so your handheld reading and the actual exposure at the film plane line up instead of coming back a stop dark.

Price is the other catch. Contax 645 glass spiked once people started adapting it to Phase One backs and GFX bodies, and the Apo-Makro-Planar is one of the pricier pieces because nothing replaced it. Cross-shopped against the Mamiya 645 120mm Macro, which costs a fraction, the Zeiss wins on coating, color, and edge correction and loses badly on your wallet. Photographers still pay it because there is no modern equivalent for medium format film. There is only the used Zeiss, and the line behind it.