Just got this Chinese made Kerlee 35mm F1.2 for a few weeks. Initial testing indicates that it seems to be an excellent lens. Slight dark corners are visible at F1.2 and at F2 its almost unnoticeable. There is a trace of purple/green CA at wide open for high contrast images - but its a bit better than the Nikon at F1.4. I did not notice any distortion even at F1.2. Flare is well controlled too. Boken is nice as it should be with a 14 blade aperture.