Play around by changing the ISO setting to see how it affects the image brightness and grain level.
In traditional film photography ISO (or ASA) was the indication of how sensitive a film was to light. In digital photography ISO measures the sensitivity of the image sensor. Higher ISO means the sensor is more sensitive to light which means the image will be brighter – this allows you to use your camera in darker situations. Hovewer, high ISO results in grain (noise) that may descrease the quality of an image. Next: White Balance go back
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