What does ISO describe in a camera?

The sensor's sensitivity to light.

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  1. The file's storage size
  2. The sensor's sensitivity to light ✔
  3. The lens's focal length

Why: ISO is a measure of light sensitivity, useful when adjusting exposure in different conditions.

Huh, didn't know that: ISO is a measure of light sensitivity, useful when adjusting exposure in different conditions.

The dad joke
ISO is sensitive, so handle its feelings with care.
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References

Answer: The sensor's sensitivity to light. ISO is a measure of light sensitivity, useful when adjusting exposure in different conditions.

  1. Scouting America: Photography www.scouting.org/merit-badges/photography
    ISO (a measure of light sensitivity)
    Checked 2026-11-07.

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