What effect does a higher ISO setting have on an image?

Practice Questions

Q1
What effect does a higher ISO setting have on an image?
  1. Increases image brightness without affecting noise
  2. Decreases image brightness and increases noise
  3. Increases image brightness and increases noise
  4. Has no effect on brightness or noise

Questions & Step-by-Step Solutions

What effect does a higher ISO setting have on an image?
Correct Answer: A higher ISO setting increases image brightness but also increases noise.
  • Step 1: Understand what ISO means. ISO is a setting on your camera that controls how sensitive the camera's sensor is to light.
  • Step 2: Know that a higher ISO number means the sensor is more sensitive to light.
  • Step 3: Realize that when you increase the ISO, the image will become brighter because the camera can capture more light.
  • Step 4: Be aware that increasing the ISO can also introduce noise, which makes the image look grainy or less clear.
  • Step 5: Remember that while a higher ISO can help in low light situations, it can also reduce the overall quality of the image due to this noise.
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