The firmware update for the newly introduced EF 200-400mm f/4L IS Extender 1.4x can enable your camera for AF at f/8 with older and more recent cameras.
Learn about the major features, system enhancements, technologies, and accessories of various EOS DSLR cameras.
Multi-spot meter readings allows a critical photographer to take more than one spot meter reading of a scene. Up to eight different parts of a scene can be averaged automatically in this way.
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