USM stands for Ultrasonic Autofocus Motor. These lenses offer manual focus override and fast, smooth and comparatively quiet ...
Digital Camera World on MSN
“I love using this Canon RF 100-500mm for fall photography as it squeezes so much beautiful color into a single frame”
Break the rules! Canon pro Pete Travers reveals why you don’t always have to use a wide-angle ‘landscape’ lens for landscape shots ...
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