Mitakon Zhongyi Speedmaster 85mm f/1.2 Lens for Pentax K Review

The Mitakon Zhongyi Speedmaster 85mm f/1.2 is a fast manual-focus portrait prime designed for Pentax K-mount full-frame cameras. At $499, it occupies a rare niche: an ultrawide-aperture 85mm for a mount often overlooked by third-party manufacturers. The lens features two extra-low dispersion elements and four high refractive index elements to manage chromatic aberration and distortion, while a floating elements design aims to maintain sharpness at close focus distances. The de-clicked aperture ring makes it suitable for video work, and an 11-blade diaphragm promises smooth bokeh.

Build quality appears solid with a metal barrel and mount, and the f/1.2 maximum aperture offers shallow depth-of-field control and low-light capability that few alternatives in this price range can match for Pentax shooters. Manual focus only means this lens is best suited to deliberate shooting styles rather than fast-paced action. For Pentax K-mount users seeking an affordable fast 85mm and willing to focus manually, this Speedmaster presents one of the few viable options at its price point.