| http://www.w3.org/ns/prov#value | - The Samsung 20-50mm F3.5-5.6 ED Standard Zoom Lens (30.8 to 77mm equivalent) looks to be a folding design like those for PEN-series models from Olympus, and incorporates what Samsung calls i-Function -- essentially, a button on the lens that lets users change settings including shutter speed, aperture, exposure compensation, white balance, and ISO sensitivity without taking their hand off the le
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