As you can see, Lens.com is the cheapest option overall, with LensDirect.com a close second and 1-800 Contacts lagging pretty far behind. When it comes to shopping for contacts, there are some other ...
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 ...
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