06-15-2011, 09:18 AM
I believe this is CA, but not caused by the lens you used, it is caused by the microlenses on the sensor. Therefore it is called "purple fringe" not to be mixed by LoCA or LaCA.
In such scenes with high contrast and with the light coming from behind, it is visable if the shot is over-exposed. Allowing less light will cure the problem. Or during post processing, you can try to adjust the Hue/Saturation/Lightness slides (by selecting the correct color channel).
PS: some say that using an UV filter might avoid PF (by not allowing the shorter wavelengths), but I didn't try it.
Serkan
In such scenes with high contrast and with the light coming from behind, it is visable if the shot is over-exposed. Allowing less light will cure the problem. Or during post processing, you can try to adjust the Hue/Saturation/Lightness slides (by selecting the correct color channel).
PS: some say that using an UV filter might avoid PF (by not allowing the shorter wavelengths), but I didn't try it.
Serkan