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Anonymous
>>63933 Bad answer.
If you increase the exposure, it increases the amount of light the camera lets in. If you want your night pictures more legible and so on, increase it. This is done in three ways:
1. The lens opens up more, to let in more light. This also has the effect of less of the picture being in focus, although if your camera's focus system is working right the subject will be. Just less of the stuff around it.
2. The shutter is open for longer. If it's open too long, anything moving will be blurred because it will record it moving from one point to the other, like a streak.
3. It increases the amount the camera boosts the signal it gets by in processing. This will increase the "noise," the little dots, often colored, you see in many digital images.
If you want the opposite- less light, more in focus, slower shutter speed, less noise, you decrease it.
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