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Language of Stop /

14.3 - Examples

Review of the Grammar

2X

When you add a stop of light, you're doubling the amount of light.

1/2X

When you subtract a stop of light, you're decreasing the light by half.

Adding Stops

A Stop is a quantity of light.

Here, one stop of light is represented by a box.

If you add one more stop of light, the amount of light doubles.

If you add yet another stop of light, the light doubles again.

Subtracting Stops

If you have one stop of light . . .

. . . and you subtract one stop of light, the amount of light halves.

If you subtract yet another stop of light, the amount of light halves again.

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.