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Best Nikon Full Frame Lenses Under $500

Nikon has some exciting lenses in its arsenal. The company has some costly lenses, which offer the best results ever. However ...
Digital Photography Review

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 ...