169 Inverse-Square Law
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Inverse-Square Law
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I don\'t want to get crazy technical and then lose half of my audience because this one episode feels more like a math class than a photography podcast. So I will keep this simple. However far your subject is to your light source that is your base, if you double the distance between your light source and subject you end up with one quarter the amount of light power reaching the subject. There are a couple reasons why the distance between your subject and light source would change and more often than not it is to adjust the softness (or hardness) of the light. When we talk about hard or soft light we are really talking about how sharp or blurred the shadows are. The closer your light to a subject the softer the shadows and vice versa, the farther your light to your subject the harder the shadows. Yes distance is playing a role in the softness or sharpness of the shadows but more so it is the size of the light source from the relative perspective of the subject itself. Listen to the episode I think it is more easily explained than writing it all out here.
Happy Shooting!
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