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If the person you’re photographing wears eyeglasses, you’ve got a problem: How do you keep reflections out of them?

The most common reflection is from an on-camera flash or studio light. In the studio, where umbrellas and soft boxes can create huge surfaces that reflect off surfaces like crazy, the solution is simple: Have the sitter tilt her head down or away slightly so the glasses reflect the light source away from your lens. But even if the sitter shifts her head, be sure your subject is looking at the camera. If you’re using continuous lights or strobes with modeling lights, you’ll see the results in the viewfinder or LCD monitor.