Moj znajomy znalazl cos na temat 85 1.8:

Actually the CA examples you gave are caused by high contrast photos. CA can be caused two ways. One the lens elements bending different light wavelengths, causing them to shift slightly. Second, Overexposed pixels creep into dark areas next to them. All your photos have the CA at the overexposed highlights with the darkest pixel directly next to it. This is not the fault of the lens as those are extreme cases. The high contrast this lens has will make it prone to this kind of CA. I do not recommend using this lens with high contrast scenes. It is a portrait lens and I also don't recommend it for landscapes wide open. Stopping it down solves the problem. Thats why you don't see this in other lenses that cannot be as wide a aperture
Mysle ,ze Vanmurder albo ktos kto zna dobrze angielski przetlumaczy to na potrzeby forum ;-)