Knowing when to use spot metering is one of the questions we often hear from photographers who are struggling to get accurate exposures. The default matrix, or multi-segment, metering on most digital cameras is accurate and reliable in most shooting situations. However, if you’re shooting into the light or against a light or dark background, the results can be under- or overexposed. It’s not always easy to get the exact light level you want using exposure compensation. For complete control, use spot metering. Instead of taking several readings all over the subject, your camera's spot meter takes one from a tiny area of the subject. Spot metering requires a little more effort than matrix metering but can give much better results.