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Message: <blockquote data-quote="aroy" data-source="post: 327159" data-attributes="member: 16090">Matrix metering evaluates the light across the frame, and then decides; based on its data base; what is the best exposure. I think that the algorithm is a bit conservative not wanting to blow any highlight immaterial of its impact on the photo. On a uniformly lit scene, as in a landscape shot, it works fine most of the time, but if you have a lot of shadows and bright areas, then it underexposes.Centre weighed exposure metering gives maximum weightage to the centre of the frame. So if the object you are concentrating is in the centre and is in shadow, it will expose the object correctly. The rest of the area may be over exposed. Similarly if the object is in bright light, the rest of the frame will be under exposed.</blockquote>