01 January 2015

Learning more about Canon EF Lenses: Canon EF / EF-S STM Lenses



Canon EF / EF-S STM Lenses - YouTube Video
Canon STM lenses have stepping motors that allow you to focus quietly and follow your subject smoothly. Photographer and educator Matt Kloskowski demonstrates the quiet smoothness of Canon's STM technology. Source: Canon USA

http://www.usa.canon.com/cusa/consumer/standard_display/howto_lens_101?pageKeyCode=noLeftNavigation

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