How to get rid of color casts in HDR
There are a few ways to get rid of color casts in HDR images. One common way is to use a color balance adjustment tool, which lets you change the levels of red, green, and blue to change the balance of colors in the picture as a whole. You can also use a white balance tool, which lets you adjust the levels of magenta and green to change the overall color temperature of the image. Some software for editing images also has a tool for correcting color casts.
You can also use color grading or color correction to change the color temperature of an image and make it look more natural.
It’s important to keep in mind that the method you choose will depend on the image and how the colors are cast. To get the result you want with some images, you may need to use more advanced techniques, like curves or color lookup tables (LUTs).