The bottom line is that you should improve the ISO when there may be not enough light for the camera to seize a pointy, vivid photograph some other manner. When you take photos of individuals, you are taking images with eye lines.

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The bottom line is that you should improve the ISO when there may be not enough light for the camera to seize a pointy, vivid photograph some other manner. When you take photos of individuals, you are taking images with eye lines.