There are three, basic ways to approach lighting a model: High key, low key, or normal key.
Normal key means you're going to light and expose and process the photo to contrast values that most closely resemble "normal." In other words, you're not going to use light and contrast, in very noticeable ways, to create mood.
High key images are bright with reduced contrast. Generally, they're used to create an upbeat mood. Conversely, low key images are dark with high contrast. The mood they create is more, well, more dark, emotionally dark, with much drama and mystery. READ MORE?
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