Canon STM lenses have stepping motors that allow you to focus quietly and follow your subject smoothly. Canon expert Jon Lorentz demonstrates the quiet smoothness of Canon's STM technology. For more information, please visit: http://Canon.us/duvx
https://ift.tt/2Qvs11o support@endlesssupplies.ca (Endless Supplies .Ca) November 08, 2018 at 06:31PM
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