To fix photos that are suffering from chromatic aberration, use Edit | Adjust | Chromatic Aberration [Ctrl+Shift+A].
Chromatic aberration can have any of several causes; one cause is different refraction of rays of light with different wavelengths. Its most common effect on a picture is to add a purple, sometimes also green or blue blurred contour in places with high contrast. Zoner Photo Studio offers a very easy-to-use tool for eliminating this problem.
ZPS X offers several possibilities for correcting photos with chromatic aberration. To reach the correction feature in the Manager, use this top-menu item: Edit | Adjust | Chromatic Aberration [Ctrl+Shift+A]. In the Editor, use Edit | Adjust | Chromatic Aberration instead.
In the Develop module’s Camera and Lens controls, two differing chromatic aberration correction approaches are offered:
- Automatic correction, which is only offered for RAW files, and
- Manual correction.
Two options are available for automatic correction. If a lens profile is available, and that profile contains the necessary data, then you can use correction Based on Profile. If no profile is available, or it does not contain the data, you can use Based on Image Analysis instead.
Manual correction offers controls for suppressing colors along two scales: Red–green and Green–blue. These shift the mentioned colors against each other to suppress the defect. This approach is most useful when the chromatic aberration is absent in the middle of a picture and grows towards its edges. If it takes on some other form instead, try eliminating it using Defringe in the Develop module. Outside of the the Develop module, you can try this:
When there is no chromatic aberration in the center of a picture and it becomes gradually stronger towards the edges, you can fix it using the “Red–green” and “Blue–yellow” sliders. By using these to “push” the color channels towards each other, you will fix the defect.
But if the chromatic aberration manifests itself in another way or if the mentioned controls are not enough to suppress it, you can turn on the Desaturate a particular color controls. These let you selectively suppress colors in the picture, with a tolerance level of your choice.