Hasselblad / Zeiss Sonnar CF 180mm f/4

Most people shopping the Hasselblad V telephoto range are really deciding between this and the 150mm Sonnar one notch down. The 150 is lighter, cheaper, and it is the focal length that has flattered medium-format faces since the 1980s, so it usually wins on reflex. The 180 is the one you reach for when the 150 is not quite reaching. It is a touch sharper wide open than the 150, with the optics tuned tighter, and on a 6x6 frame it lands at roughly a 100mm short tele in 35mm terms. That extra stand-back distance is the whole point. For a tight headshot where you do not want to crowd the subject, or a three-quarter portrait across a studio, the 180 frames cleaner without you stepping into the sitter's space.

This is a Sonnar, the same design family Zeiss has been refining since the 1930s, reworked for the V system and built into the CF body with its own Prontor leaf shutter. Wide open at f/4 it is already crisp where the 150 is still glowing a little, with strong micro-contrast that renders skin texture and fabric without tipping into clinical. Stop to f/8 and it is excellent edge to edge. Out-of-focus rendering stays calm. Specular highlights behind the head come back round, the falloff from sharp to soft is gradual, and nothing churns at the frame edge the way a fast double-Gauss can. Color carries the typical Sonnar warmth and saturation, which holds up under mixed studio light better than its age suggests, thanks to Zeiss T* multicoating.

The shutter is the reason a lot of working photographers chose the system at all. Every CF lens flash-syncs at every speed up to 1/500, so you can drag ambient light or kill it outright at full sync, no focal-plane ceiling to fight. For strobe portraiture and outdoor fill that is a genuine advantage that 35mm SLR shooters simply do not have.

The honest weakness is that f/4 on a long medium-format lens is slow, and the 180 is the heaviest of the bunch. In dim light you are focusing on a dark screen, metering a dark scene, and holding a front-heavy lens that wants to shake. The leaf shutter only goes down to one second before you switch to B and time by hand, so long exposures get manual fast. If you need actual low-light speed, the 110mm f/2 Planar exists in the V system, though it is a focal-plane F lens that mounts only on the 2000 and 200-series bodies, so you trade away the all-speed flash sync the CF just gave you. On those bodies it embarrasses every Sonnar for light-gathering.

Today the 180 CF sits above the 150 in cost and demand precisely because of that sharpness edge, but below the 110 Planar and the more recent CFi glass. People still buy it for the reach-plus-resolution combination that the 150 cannot quite match. When you do work it in marginal light, meter for the shadow tone you care about and watch the speed the app hands you. In Zone Light Meter, place your key value on the zone scale and read the aperture; at f/4 in low light it will routinely push you toward those one-second-and-slower speeds, which is your cue to put it on a tripod rather than trust your hands.