What would be the best way to make the background pure white but keep the products shadows if possible? (I'm not opposed to recreating the shadows if needed). Client wants a pure white background for this shot. I'm looking a an effective way to do this that won't take me an hour of hand painting. I was thinking so far that I could create clipping masks of the objects, forget about the shadows, bring the background to a clean white and then recreate the shadows. But is there a better way?