For all the 4K fever in TV land, there haven’t been many options for normal people who want to capture ultra-HD video. Panasonic’s new mirrorless Lumix DMC-GH4 has the aesthetics and ergonomics of an interchangeable-lens still camera, but it’s also the largest-sensored 4K video-capture device yet (for consumers, at least).
The GH4 is built around a brand-new 16-megapixel sensor that Panasonic says produces very little visual noise and eliminates the “rolling shutter” effect you get with other CMOS-sensored cameras when panning from side to side or capturing fast-moving objects. The sensor is the same size as the one found in previous iterations of the video-savvy Lumix GH series — smaller than APS-C, but bigger than the 1-inch-type sensor in Sony’s Handycam AX100 4K camcorder.
In addition to the 3840 x 2160 resolution supported by most first-generation 4K/Ultra HD TVs, the GH4 is able to record at an even higher resolution of 4096 x 2160 with a 17:9 aspect ratio. Those are the specs supported by the 4K digital movie projectors at your local cinema and professional 4K monitors. In “Cinema 4K” mode, which records as MOV or MP4 files, the GH4 tops out at a frame rate of 24fps with a robust 100Mbps bit rate. At 3840 x 2160 resolution, it can record at both 30fps and 24fps, both at 100Mbps and saved as MOV or MP4 files.
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