Seems like a good price...
The high speed Panasonic Lumix DMC-GH4 is a tough and rugged professional quality mirrorless camera featuring a new Live MOS Sensor and Venus Engine to give superb picture quality. It's the world's first Digital Single Lens Mirrorless Camera to include 4K video recording for truly professional results.
Superb Picture Quality for Lifelike Textures
The image processor Venus Engine is newly developed with new quad-core CPU that enables high speed signal processing. Combination of new Digital Live MOS Sensor and the Venus Engine dramatically improves sensitivity (max.ISO25600), gradation performance, resolution and colour reproduction to achieve even higher picture quality.
4K video creation for professional quality
The GH4 further evolves to meet professional quality and standard with the capability of 4K(Cinema 4K: 4096x2160 / 24 fps and QFHD 4K: 3840x2160 / up to 30 fps) video recording in MOV/MP4 or ultra high bitrate video recording at 200 Mbps (ALL-Intra) or 100 Mbps (IPB) without recording time limit. In addition, a variety of practical functions required for professional video recording are newly integrated.
Superb Mobility & High Speed Response
The high-precision Contrast AF now integrates DFD (Depth from Defocus) technology to achieve ultra high speed AF of approx.0.07 sec. The burst shooting power is also boosted to12 fps(AFS). Both 2,359K-dot LVF (Live View Finder) and 1,036K-dot rear monitor adopt OLED to minimize time lag while enhancing the resolution.
Tough & Durable
The main structure of the DMC-GH4 is composed of magnesium alloy full diecast front / rear frame. It also features splash / dustproof construction thanks to the sealing on every joint, dial, and button. The shutter unit is also redesigned to be even more durable for approx. 200,000 times release
Expandability for flexible usage
To offer more flexible usage, the DMC-GH4 incorporates Wi-Fi with NFC Technology plus in-camera RAW development capability. It also complies with External Flash (DMW-FL580L), Stereo/Shotgun Microphone (DMW-MS2) or Battery Grip (DMW-BGGH3) to support professional photography/videography.