Whats the difference between evaluative, centerweighted, and spotmetering?
All camera meters try to make some part of the frame appear as a midtoneright between very light and very dark. Evaluative metering divides the frame up into segments, compares the readings in each section, and decides on an appropriate pattern for determining exposure. Centerweighted takes into account all the light, but puts a heavy emphasis on the middle of the frame. Spotmetering uses a small percentage of the frameoften less than 5 percent and typically in the center, though some cameras let you link it to the active AF point. While evaluative is best for most situations, centerweighted works well for subjects such as group portraits. For the most control, use spotmetering to choose the midtone.
