Originally posted by Giklab Umm... Where do you see fringing here? Anyway, Na Horuk is correct, although longitudinal ("normal") CA can also be green.
Longitudinal (a.k.a axial, LoCA): plane of focus varies by color
Lateral (a.k.a transverse, LaCA): various colors are displaced laterally at the plane of focus
LoCA shows as a single color on all sides of an object (full fringe). A common example would be yellowish on the near side and bluish on the far. The near side color is usually not visible. Lateral CA shows as one color on one side of an object and (not always visible) the complementary color on the other side. An example would be greenish on the left side and magenta on the right. In both type of CA, there is a degradation of image sharpness. This is the most important factor and is true for monochrome as well as color photography.
In my experience with the lenses I own, greenish CA is generally of the lateral type and is usually easily corrected with a general improvement in image sharpness across the frame.
Steve