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Exposure / Learn by doing

Evaluative Metering explained simply

What is “Evaluative Metering”?

A camera system that considers several areas of the scene to choose an exposure. Other brands use names such as matrix metering.

  1. 01Many measuring zones
  2. 02Combined estimate
  3. 03Review key detail
Visual reminder: Many measuring zones → Combined estimate → Review key detail. The illustration is a learning aid; use the practical exercise below to see the effect in a real photograph.

How do you use Evaluative Metering practically?

A small exercise

Photograph a portrait in even light, then in front of a bright window. Compare the camera choices and your subject’s detail.

  1. Make a starting version and keep it so you can compare fairly.
  2. Try the change in the exercise. Keep unrelated choices steady where the exercise allows.
  3. Compare the result at the size your viewer will actually see. Write down what changed and whether it helped.

How does Evaluative Metering solve a problem?

It gives a useful general starting point for many scenes without moving a spot meter around.

What can go wrong?

Different cameras weight areas differently. It is not a promise that every bright highlight will be preserved.

How do you turn the idea into a useful solution?

Start with the specific problem in your image or brief, try the exercise, and keep the version that meets that need. If the result is worse, return to the starting version and change one choice at a time.

Quick check: can you explain the three ideas in the diagram?

Many measuring zones → Combined estimate → Review key detail. Explain how each relates to the exercise. Then compare the starting version with your result and choose the one that meets your brief.

Related video lesson

Exposure basics — Canon

This related lesson gives wider context for the topic. Camera menus and software versions may differ from yours.

Loading the player connects to YouTube. You can also watch the lesson on YouTube.

Keep exploring

Try the idea in a studio shoot

Planning a portrait or product session? Use the glossary with our practical shoot guides, then check the studio facilities and send your confirmed requirements with an availability enquiry.