Photoshop Harmonize automatically adjusts an object's color, lighting, and shadows to match any background. It's very, very good - and addictive.
Learn GIMP - you won't regret it. I'm a GIMP expert, and I've got 10 tips for getting productive faster with this great Photoshop alternative.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results