Pentax's fast 6x7 standard — the SMC Pentax 6x7 90mm f/2.8, a versatile near-normal for 6x7.
The SMC Pentax 6x7 90mm f/2.8 is a fast standard lens for the Pentax 6x7 medium-format system, from the SMC Pentax 6x7 generation of the line. It served as one of the brighter near-normal options for the 6x7 negative, a practical everyday lens without the leaf shutter of the LS variant.
This is a manual-focus lens for the Pentax 67 bayonet mount, covering the 6x7 cm frame. It has a fixed 90mm focal length and a maximum aperture of f/2.8, fast for a medium-format standard. The Super Multi Coating denoted by the SMC prefix controls flare and holds contrast on the near-normal field over the large frame.
On the 6x7 frame a 90mm gives a slightly-long normal angle of view that works for portraits, general photography and landscapes alike. The f/2.8 speed allows some background separation and lower-light hand-holding for a lens covering so large a negative, making it a versatile core lens in a 6x7 kit.
On the used market this 90mm is one of the more common and affordable fast standards of the line, a sensible first lens for the system. Check the elements for haze and cleaning marks, look for fungus, and confirm the aperture blades are dry with a smooth focus action. It can be adapted to mirrorless through a Pentax 67 mount adapter.