The Panasonic Lumix DMC-GH4 looks an awful lot like its predecessor, the GH3, but don't let that familiarity cloud the fact that this is one of the most capable stills/video cameras we've ever seen. Panasonic's message about listening to professional videographers is also familiar but the extent to which they're catered-for is unpredented on a camera with such a mass-market price tag.
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