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This is part two of Ming Thein‘s series on Understanding Metering.

In part one we examined why metering is important, and how the basics of how meters work. In today’s article, I’lltake a closer look at the different types of metering, how they differ, and under what situations they should be deployed.

A sample viewfinder – in this case, a rough representation of the Nikon D2H/ D2X finder.

With that background out of the way, let’s look at how the various metering options work, and what typical situations they might best be deployed under. Cameras typically have three options, or some variation upon that. Within these options, it’s also usually possible to fine tune various aspects of the meter’s operation. I’m going to leave out handheld meter operation since this is something that’s almost never encountered today. An important point to note is that all meters can be fooled by situations of uniform luminance, so don’t trust the readout blindly. Remember, meters function by averaging the entire evaluated area out to middle gray; this means if your evaluated area is meant to be black or white, you’re going to need to add or subtract some exposure compensation. For predominantly light/ white scenes, you need to add; for dark scenes, subtract. This holds true for every one of the different metering methods detailed below.[Read More…]