Shen Yang, China—Zhong Yi Optics, a wide-aperture lens manufacturer, released a new portrait lens. The Mitakon Speedmaster 90mm F1.5 is available in Leica M, Canon RF, Sony FE and Nikon Z mounts.
Moreover, with a medium telephoto angle of view and greater control of depth of view, the lens aids in producing distortion-free portraits with well-controlled color artifacts. In addition, the Leica M version can also realize autofocus with third-party adapters.
Mitakon Speedmaster 90mm F1.5 Key Features
The 90mm f/1.5 lens is said to render “dreamlike ambiance.” Its buttery bokeh at the maximum aperture blends with the background. Further, combining its fast aperture with a long focal length, shallow depth of field enables separation of the main subject from the background. In addition, a 9-bladed round iris enables pleasing round-shape bokeh.
The prime lens is constructed of 9 elements in 6 groups optics to retain sharply defined details and contrast at its wide-open aperture. Two extra-low dispersion elements reduce color fringing as well as chromatic aberrations. 
What’s more, in a low-light environment or at night, photographers will benefit from the wide aperture. In addition, the Mitakon Speedmaster can replicate light sources consistently over the entire frame, without sharp coma flare.
“Bright-dark transitions in the image, and especially highlights, are reproduced almost completely free of color artifacts with our Speedmaster 90mm f/1.5,” the company announced. Special glass elements with anomalous partial dispersion correct chromatic aberrations (axial chromatic aberrations). “The chromatic aberrations are therefore too minimal to observe.”
In addition, a modern 90mm lens is sometimes referred as a standard lens for architecture. However, the lens’s approximate 27° view angle is also a solution for portraits. It avoids the compression effects offered by a longer focal length lens.
AF Realization with Third-party Adapters
Furthermore, for Nikon Z and Sony camera users, there are automatic adapters in the market that turn Leica M-mount manual lenses into autofocus lenses.
Both Megadap MTZ11 and Techart TZM-01/LM-EA7 adapters are supported. Adapters can also support AF-S, AF-C, AF-F and face/eye detection with the IBIS of the cameras.
The new Mitakon Speedmaster 90mm f/1.5 is now available for the following suggested retail prices: Leica M mount, $649; Canon RF, Nikon Z and Sony FE mounts, $599.
