The Samyang 85 mm f/1.2 Premium is a very well-done construction. The only serious flaw we managed to find was too high level of longitudinal chromatic aberration. Compared to such rivals as the Mitakon or the Canon the Samyang is able to perform better on the edge of the frame.
Solid casing and good build quality,, Very good image quality in the frame centre,, Acceptable image quality on the edge of APS-C and full frame,, Low lateral chromatic aberration,, Lack of problems with spherical aberration,, Negligible distortion,, Moderate coma,, Slight astigmatism,, Nice...
Too high longitudinal chromatic aberration,, Distinct vignetting on full frame.