Nikon has released an updated version of their D4 full frame pro SLR. Labelled the D4s, the camera features several refinements over its sibling, namely more processing power, autofocus refinements (including a new “group AF” mode), faster continuous shooting, and enhanced video features (including 1080/60p support). In addition, it has a new smaller sized Raw format option to speed workflow and an improvement in battery life.

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