Why Your Photo Manipulations Look Fake (And the Lighting Math That Fixes Them)

Why Your Photo Manipulations Look Fake (And the Lighting Math That Fixes Them)

A few years back, a student sent me a composite she’d spent a full weekend on. The cutout was clean, the color grading was beautiful, and she’d even matched the grain. But something was deeply wrong, and she couldn’t put her finger on it. I spotted it in about four seconds: the light on her subject was coming from the left, and every single background element was lit from the right.