Originally posted by Racer X 69 Isn't this called chromatic aberration?
Originally posted by oxidized I think in this case they can be used interchangeably. I think PF is a type of CA.
The slight purple around the ruler markings in front of the plane of focus, or the green fringing behind the plane of focus is Longitudinal CA (not the easily correctable Lateral CA that gets worse at the edges -
see here). That is normal CA, and I see it all the time with my DFA 100mm Macro at 2.8...
The broad purple fringing around the highlights is sensor overflow due to high contrast, and can be influenced by the type of sensor as well as the lens itself. My K-5 shows more of this purple fringing than my old K20D with the same lenses... but it's still quite a lot in those photos!