A metering mode tells your camera which part of the scene to measure when it chooses an exposure. Evaluative (also called matrix) looks at the whole frame and suits most situations, center-weighted favors the middle, and spot reads a tiny area for tricky lighting. Choosing the right mode keeps your subject properly exposed when light and dark areas compete.
What the Camera Is Doing
Your camera meter aims to render the measured area as a middle gray. That works well in average scenes, but a snowy field or a black cat will fool it. The metering mode controls which area is measured, and exposure compensation lets you correct the result.
The Main Metering Modes
Names differ slightly between makers, so check your camera manual for exact terms.
| Mode | What it measures | Best for |
|---|---|---|
| Evaluative or matrix | Whole frame, compared with stored scene patterns | Everyday shooting, travel, landscapes |
| Center-weighted | Whole frame with emphasis on the middle | Portraits, predictable results |
| Partial | A modest area, often around a tenth of the frame | Backlit subjects |
| Spot | A very small point, often a few percent | Stage lights, strong contrast, moon shots |
When to Choose Each One
Evaluative or Matrix
This is a dependable default. The camera analyzes brightness, color, focus point and sometimes subject distance. It handles mixed light well but can surprise you in extreme scenes.
Center-Weighted
Because the behavior is simple and consistent, many photographers like it for portraits and street work. Exposure stays steady as long as the subject sits near the middle.
Partial and Spot
Use these when your subject is much brighter or darker than its surroundings. A singer under a spotlight on a dark stage is a classic case, since a wide measurement would overexpose the face.
A Simple Workflow
- Set evaluative metering as your default.
- Take a test shot and check the histogram and the screen.
- If the subject looks too dark or bright, use exposure compensation, often around plus or minus one stop to begin with.
- For strong contrast, switch to spot metering and point it at the area that matters most.
- Lock exposure with your camera’s lock button if you want to recompose without changing the reading.
- Recheck after the light changes.
These steps are a general approach; adjust them to your camera and scene.
Common Metering Mistakes
- Leaving spot metering on and forgetting it, so later scenes look wrong.
- Metering a bright sky when the subject is in shade.
- Ignoring the histogram and trusting the screen brightness alone.
- Expecting the meter to know that snow is white and not gray.
FAQ
Do metering modes matter in manual mode?
Yes. Manual mode still uses the meter as a guide, shown as a scale in the viewfinder. The mode determines what that reading is based on, even though you set the exposure yourself.
Which mode should a beginner use?
Evaluative is a sensible baseline. Learn exposure compensation next, and try spot metering later on difficult scenes.
The Short Version
Metering modes decide what part of a scene your camera measures. Use evaluative most of the time, center-weighted for steady portrait work, and spot or partial when your subject sits in very different light than its surroundings.
