Pentax's fast portrait for 645 — the FA 150mm f/2.8 IF for medium format portraiture.
The Pentax SMC FA 645 150mm f/2.8 IF is a fast portrait prime for the Pentax 645 medium format system. At 150mm on 645, it provides approximately a 118mm equivalent — a classic telephoto portrait perspective. The f/2.8 on medium format creates extraordinary DOF separation. FA designation ensures compatibility with digital 645D/Z bodies.
Outstanding medium format portrait optics. The f/2.8 on the large 645 format creates DOF separation that full-frame cannot match at equivalent framing. Sharpness excellent. IF prevents barrel extension. SMC coatings ensure contrast. The 118mm equivalent with f/2.8 on medium format produces images with extraordinary three-dimensional rendering.
Pentax 645 mount with autofocus. IF design. Filter thread varies. Weight moderate for medium format. FA designation — compatible with both film 645N/NII and digital 645D/645Z. The digital 645Z compatibility adds significant practical value. The fast f/2.8 is the distinguishing feature — faster than most 645 telephoto alternatives.
Available at moderate 645 prices. Check AF and smooth IF focus. One of the finest portrait lenses in the 645 system. The f/2.8 on 645 provides rendering impossible on full-frame. FA compatibility with digital 645D/Z is essential. The fast aperture and medium format combination is extraordinary for portraits.