Color: Put the original, uncorrected image on top of the layer stack and change the blending mode in the layers panel to “Color”
Glow avoidance: Yes, it has to do with the quality of lens, lens anti-reflection coating, cleanliness of lens and well as the quality of the infrared filter in the camera (although that’s more rarely the problem). Bright light bounces back and forth between the individual lenses creating a glow. Or a dirty lens diffuses along the way before it hits the sensor. Or, could be there’s a sub-par IR filter in the camera, which can let infrared frequencies of light through which show up as glows.
Cleaning the lens carefully would be the first thing to try.
In the worst case you have some humidity build-up inside the lens, which can be caused from going from cold to warm environment too fast, which may require getting the lens cleaned professionally.
Kalleheikki Kannisto
Senior Graphic Designer