Matrix metering is the most advanced of the metering options on a Nikon camera, be it a DSLR or a ML camera. It divides the scene into multiple zones and evaluates the light intensity and contrast in each zone. The system considers the brightness and contrast levels in each zone to evaluate the overall exposure. Subject recognition may also be used to determine the most important zones as well as the zone that has the focus point. The system has developed over the years and hence the system is not static but had improved from one model to the next.
Nikon Matrix Metering can work with non-CPU lenses, but with some limitations. Non-CPU lenses do not transmit lens information (e.g., focal length, maximum aperture) to the camera, which can impact the metering system’s accuracy. Therefore the Nikon camera – when shooting with a non-CPU lens – will typically default to center-weighted or spot metering mode, instead of Matrix metering.
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