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2X |
When you add a stop of light, you're doubling the amount of light. |
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1/2X |
When you subtract a stop of light, you're decreasing the light by half. |
A Stop is a quantity of light.
Here, one stop of light is represented by a box.
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If you add one more stop of light, the amount of light doubles.
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If you add yet another stop of light, the light doubles again.
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If you have one stop of light . . .
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. . . and you subtract one stop of light, the amount of light halves.
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If you subtract yet another stop of light, the amount of light halves again.
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That's the grammar of Stop: 1/2 and 2X.
We've been looking at Stop abstractly.
Let's see Stop in action with a photograph.
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