During the last few months I tried to figure out a way to match images using the MacBeth ColorChecker directly in Nuke. A similar functionality has been provided by HDRShop already but it’s always more convenient (and, of course, cheaper) to be able to stay within the same application. After a little research on the math, I’ve come up with a solution with this little gizmo called mmColorTarget. It has inputs for a source and target image and a multi sampler for each one of them.