The Atomos Shogun is many things: (i) external recorder which will record ProRes as 4K, HD or RAW (ii) external monitor (iii) provides waveform monitor/vectorscope, peaking, false colour and many other functions. (iv) playback device for 4K or HD content over SDI or HDMI.
In this video piece we have a brief look at some of the capabilities of the Shogun in combination with the JVC GY-LS300.
Watch One of a Kind for the full review of the JVC GY-LS300