Pentax SMC Pentax 67 165mm f/2.8

Skin separates from background on this lens in a way that looks almost three-dimensional, and that is the whole reason it exists. On a 6x7 negative, 165mm is a short telephoto, roughly an 80mm equivalent in 35mm terms, sitting right in the classic portrait zone. The out-of-focus rendering is smooth and unbusy, with circles of confusion that fall off gently rather than outlining edges. Wide open at f/2.8 you get a thin slice of focus across that enormous frame, which is exactly what people chase when they put it on a Pentax 67 body.

The f/2.8 version is the one to know. There was also a 165mm f/4 in the lineup, the one leaf-shutter lens Pentax built for the 67, but this faster f/2.8 is the portrait shooter's pick. Like the rest of the Pentax 67 line it wears Pentax's SMC multicoating, which gives good flare resistance and clean, saturated color. Sharpness wide open is already strong in the center, the kind that resolves eyelashes cleanly while the ears drift soft. Stop down to f/5.6 or f/8 and it tightens across the field, useful when you want both eyes and a bit of the shoulder sharp. Contrast is moderate rather than punchy, which flatters skin and keeps highlights from clipping on slide film.

Who reaches for it: studio and editorial portrait shooters who want medium-format tonality without dragging out a view camera, plus environmental portraitists who like working a little back from the subject. The Pentax 67 system as a whole built its reputation on fashion and beauty work through the 1990s, and this focal length is a big part of why. It renders a face the way a fast 85mm does on 35mm, only with the extra tonal smoothness that a much larger negative buys you.

The honest weakness is the system, not the glass. There is no leaf shutter here; the Pentax 67 uses a focal-plane shutter in the body, so flash sync tops out at 1/30 on every Pentax 67 body when you mount a focal-plane lens like this one. That is why anyone who needed fast sync at this focal length reached for the leaf-shutter 165mm f/4 instead, or moved to another system entirely. Outdoor fill-flash at wide apertures in bright sun gets awkward fast. The lens itself is also large and heavy, and handholding the 67 at the slow speeds this focal length sometimes demands is a workout.

Against a Mamiya RZ or RB 180mm, the Pentax loses on flash flexibility but tends to win on handling and on that particular smooth bokeh signature. Prices have crept up as 6x7 came back into fashion, though it is still cheaper than the boutique medium-format glass people fetishize, and you get a lot of look for the money.

One metering note. With a 67mm filter thread up front, this lens takes ND and graduated filters comfortably for landscape and slow-shutter work; set the filter factor in Zone Light Meter and it folds the correction into the reading so you are not doing the stop math in your head while a meter dangles around your neck.