Metering Modes Explained: Matrix, Center, and Spot

Your camera's light meter measures brightness and suggests an exposure. Metering modes control where it looks. Pick the wrong area to measure and a perfectly capable camera will underexpose a face or blow out a sky. The meter feeds every mode in the exposure triangle, so this setting matters whether you shoot manual or a priority mode.

The three metering modes

Matrix / evaluative metering

The camera splits the frame into zones, reads them all, and balances for an average that usually looks right. This is the default and the right choice for evenly lit scenes: landscapes, group shots, most daylight photography. Nikon calls it matrix, Canon calls it evaluative, Sony calls it multi.

Center-weighted metering

The camera reads the whole frame but gives the center far more importance. Useful when your subject is roughly central and you do not want a bright edge or corner to throw off the reading. A classic case is a portrait against a busy background.

Spot metering

The camera reads only a small circle, often a few percent of the frame, usually at the center or the active focus point. This is the precision tool. Use it when one part of the scene is the part that must be exposed correctly and the rest can fall where it lands.

When to use spot metering

Spot is the mode beginners skip and then wish they had known about. Reach for it when the subject and the background are very different brightnesses:

• A backlit face: spot meter on the cheek and the face exposes correctly, even if the bright sky behind goes lighter.
• A spotlit performer on a dark stage: spot meter on the performer and ignore the black surroundings.
• The moon: a tiny bright object in a huge dark frame fools every other mode.

Spot metering pairs naturally with exposure compensation when the thing you metered is not a neutral mid-tone.

How metering connects to the rest

Whatever the meter reads, it still moves the same three controls. In aperture priority it changes the shutter speed; in shutter priority it changes the aperture; in manual it just shows you where 0 sits. To verify the actual result rather than the meter's guess, check the histogram.

A useful daylight reference exposure to sanity-check the meter against is f/8 · 1/250 · ISO 200.

Common mistakes

• Leaving spot metering on by accident. Then every wide landscape exposes for one random point. Return to matrix when you are done with the tricky shot.
• Spot metering on the wrong tone. The meter assumes whatever you point it at is mid-gray. Spot a white wedding dress and the camera darkens it to gray. Add positive exposure compensation, or meter a mid-tone instead.
• Blaming the camera for backlight. A dark subject against a bright window is a metering choice, not a camera fault. Switch to spot or center-weighted.
• Forgetting the focus point link. On many cameras spot metering follows the active focus point. Move the point and you move the meter.

What metering mode should I leave my camera on?

Matrix or evaluative metering for everyday shooting. It handles the majority of evenly lit scenes well. Switch to spot only when the subject and background brightness differ sharply.

Why does my backlit subject come out as a silhouette?

Matrix metering averaged the bright background into the exposure, so the camera darkened everything and your subject fell into shadow. Spot meter on the subject, or add positive exposure compensation, to bring the face back.

Does metering mode matter in manual mode?

Yes. In manual mode the metering mode changes what the meter scale reads, so it changes where 0 falls. You still decide the final exposure, but the reference you are aiming at depends on which area the camera is measuring.