Tutorial courtesy of Dean Frate
The angle that the camera is held at, the barrel or pincushion characteristics of the lens, and the chromatic separation inherent to the lens and the wavelengths allowed to hit the sensor all contribute to image distortion. With infrared these issues can be more pronounced, since most lenses aren’t designed for the infrared spectrum. Playing with the various setting will give a good idea of what they do. It’s instructive to push the sliders to the max in either direction to understand the effect, before settling on a final setting. Note the chromatic aberration particularly around the light post in the foreground and that the corrective settings seem to echo Lab color space opposites.
First load the Lens Correction filter.
Use the Transform and Geometric Distortion sliders to correct perspective and pincushion/barrel in the image.
This is the result of the settings below.
Zoom in and look for light/dark transition areas to evaluate and correct chromatic aberration.
This is what the correction yields.