The older Mitakon Creator 135mm full-frame focal length has been redesigned and now reappears with an f/2.5. The optical design is new and consists of 9 elements in 7 groups, including two Super ED as well as two HR glass elements. They are designed to minimize chromatic aberrations as much as possible -- manufacturer Zhong Yi lists the lens as "APO" (apochromatic).
The internally focused Mitakon Creator 135mm f/2.5 is designed for manual operation. The focus travel is said to be long (no exact specification is found) and focus breathing is minimal. The minimum focus distance is 1 meter. The aperture is composed of 9 rounded blades.
845g is the weight of the relaunched optics, which is available for Canon EF & RF, Nikon F & Z, Sony E. The price is an affordable .