The Panasonic Lumix GH4 is a Micro Four Thirds mirrorless camera, released in 2014, that gained significant attention for its advanced video capabilities and compact design. It is part of Panasonic’s Lumix GH series, which is known for combining still photography features with professional video functionality. The GH4 built upon the success of its predecessor, the GH3, and introduced several improvements and new features, making it a popular choice among filmmakers and photographers alike.

Key Features and Innovations:

1. Sensor and Image Quality: The GH4 features a 16.05-megapixel Live MOS Micro Four Thirds sensor, providing high-quality images with accurate color reproduction and low noise. The camera’s native ISO range is 200-25,600, with an extended low ISO of 100 available.
2. Video Capabilities: The standout feature of the GH4 is its video capabilities. The camera was the first consumer mirrorless camera to offer 4K video recording (3840 x 2160) at 30fps and Cinema 4K (4096 x 2160) at 24fps, making it an attractive option for filmmakers. The GH4 also supports various codecs and bitrates, including an optional 10-bit 4:2:2 output via HDMI when paired with an external recorder. Additionally, the camera offers various video recording formats, such as MOV, MP4, and AVCHD.
3. Autofocus System: The GH4 uses a 49-point contrast-detection autofocus system called Depth from Defocus (DFD) technology. This system allows for faster and more accurate autofocus performance compared to traditional contrast-detection systems.
4. Continuous Shooting and Shutter Speed: The GH4 is capable of continuous shooting at up to 12 frames per second (fps) in single autofocus mode, making it suitable for capturing fast-moving subjects. The camera also features an electronic shutter with a maximum speed of 1/8000s, enabling the use of wide aperture lenses in bright conditions without the need for a neutral density filter.
5. Build and Design: The GH4 features a magnesium alloy body, making it both lightweight and durable. The camera is also weather-sealed, providing dust and “splash” resistance for use in challenging environments. The GH4 has a fully articulating 3-inch touchscreen LCD and a high-resolution OLED electronic viewfinder (EVF) for ease of use and versatility.

The Panasonic GH4 was well-received by both professional and enthusiast photographers and filmmakers for its advanced video features and overall performance.

The Panasonic GH4 was followed by the GH5 in 2017.