Panasonic's groundbreaking 4K mirrorless — the first interchangeable-lens camera to record 4K video internally.
The Panasonic Lumix GH4 (2014) was the first mirrorless camera to record 4K video internally, establishing the GH series as the filmmaker's MFT choice. It changed the industry by making 4K accessible at consumer prices, years before Canon and Nikon offered it in DSLRs.
4K DCI and UHD at 30p internally. V-Log L available via paid firmware upgrade. DFD contrast AF is fast for stills but hunts in video — the persistent GH-series criticism until the GH6 added phase-detect. 16MP sensor is modest for stills. Weather sealed.
Micro Four Thirds mount. Magnesium alloy body with weather sealing. OLED EVF. Dual SD card slots. HDMI 4:2:2 10-bit output. No IBIS — relies on OIS lenses. 560g body weight.
Common on the used market from video shooters who upgraded. Check sensor for dust and shutter mechanism. The GH5 improved to 4K 60p and added IBIS — worth the premium. The GH4 remains a capable budget 4K video tool.