Reviews / Canon EF 70-200mm f/4L IS II USM Lens Review The 70-200mm lens range is a popular choice for photographers so is the Canon EF 70-200mm f/4L IS II USM lens up to the mark? John Riley finds ...
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Cracking the Canon code: what letters like VCM, RF-S and DO tell you about your lens
USM stands for Ultrasonic Autofocus Motor. These lenses offer manual focus override and fast, smooth and comparatively quiet ...
Canon EF 70-200mm f/4L IS II USM Performance Sharpness at 70mm gets us off to an excellent start. Results are excellent both centre and edge from f/4 through to f/8, very good at f/11 and f/16, fair ...
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