Pentax's fast aspherical medium-format wide — the SMC Pentax 67 75mm f/2.8 AL for the 6x7 frame.
The SMC Pentax 67 75mm f/2.8 AL is a fast wide-standard lens for the Pentax 6x7 medium-format system, from the final SMC Pentax 67 generation of the line. Released in 2001, it was one of the last new designs for the system and uses aspherical glass, marked by the AL suffix, to improve correction on the large 6x7 negative.
This is a manual-focus lens for the Pentax 67 bayonet mount, covering the 6x7 cm frame. It has a fixed 75mm focal length and a maximum aperture of f/2.8, fast for a medium-format wide-standard. The AL designation indicates an aspherical element, and the Super Multi Coating denoted by the SMC prefix controls flare across the wide angle.
On the 6x7 frame a 75mm sits between wide and standard, a flexible everyday angle of view. The f/2.8 aperture is bright enough to isolate subjects and work in lower light for a medium-format lens, and the aspherical correction helps hold sharpness toward the edges of the large image circle when shooting wide open.
On the used market this late aspherical lens is one of the more desirable and pricier wides of the line, valued for its speed and correction. Check the elements for haze and cleaning marks, confirm the focus and aperture actions are smooth and dry, and look for fungus. It adapts to mirrorless bodies through a Pentax 67 mount adapter.