While each product featured is independently selected by our editors, we may include paid promotion. If you buy something through our links, we may earn commission. Read more about our Product Review ...
Digital Photography Review on MSN
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 ...
We independently review everything we recommend. We may get paid to link out to retailer sites, and when you buy through our links, we may earn a commission. Learn more› By Elizabeth Gulino When ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback