Ever since I posted my tutorial for achieving dehaze in capture One on YouTube, I’ve been getting lots of requests for a way to do the opposite. Adding haze to an image is a lot tricker than dehaze if you want to make it look realistic. To add fog or atmosphere in an image, you really need to have a depth mask to do it properly. If I were doing this for visual effects, I’d first have to create some kind of depth map for the scene. However, if you’re happy with just an approximation, then you should be able to achieve something reasonable in Capture One.