Now you're getting into territory where one could argue that correct exposure is the one that produces a result you are pleased with. []


A techical step above that, the correct exposure is one where the colors, hue, tone, saturation all reproduce what your eye saw when you took the picture. The use of a grey card in trickly lighting situations can help you adjust your photos in post processing as you use that white balance to apply to your other shots. Many people are happy with a result that is not a true reproduction of the original scene. In fact, many people adjust exposures to affect a particular emotion or feeling. In other applications (documentaries, product photos, etc.) it's critical to exactly reproduce the original scene.