What’s the Catch With High ISO?

The Catch

ISO 100 dark, but clean ISO 1600 bright, but grainy
  • Crank up a quiet radio station and you hear the song, and the static too.
  • High ISO works the same way: the picture gets brighter, and so does the noise.
  • ISO 100: dark, but clean. ISO 1600: bright, but grainy.
  • Nothing is free.
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