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What is ISO in photography?

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What’s inside this PDF?

Question: What is ISO in photography?

Options:

  1. The measure of the lens focal length
  2. The sensitivity of the camera sensor to light
  3. The speed of the shutter mechanism
  4. The size of the aperture opening

Correct Answer: The sensitivity of the camera sensor to light

Solution: 

ISO measures the sensitivity of the camera sensor to light, affecting exposure and noise levels.

What is ISO in photography?

Practice Questions

Q1
What is ISO in photography?
  1. The measure of the lens focal length
  2. The sensitivity of the camera sensor to light
  3. The speed of the shutter mechanism
  4. The size of the aperture opening

Questions & Step-by-Step Solutions

What is ISO in photography?
Correct Answer: ISO
  • Step 1: Understand that ISO is a setting on your camera.
  • Step 2: Know that ISO measures how sensitive your camera's sensor is to light.
  • Step 3: Realize that a lower ISO number (like 100) means less sensitivity to light, which is good for bright conditions.
  • Step 4: Understand that a higher ISO number (like 1600 or 3200) means more sensitivity to light, which is useful in darker conditions.
  • Step 5: Remember that increasing ISO can also introduce noise (graininess) in your photos.
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