DxOmark (Click here) tested the GH4 sensor performance and it becomes the best rated Micro Four Thirds camera yet although it beats the E-M1 by 1 point margin only. DxO writes:
The sensor performance is on a par with the highly regarded Olympus OM-D E-M1 and is competitive when viewed against rivals using APS-C size sensors. Sony has yet to revise the aging NEX-7 though the new full-frame Sony A7s looks as though the firm is tempted to build more video-centric models. However, for the time being at least the hybrid GH4 looks like a formidable contender for both stills and video users.
More GH4 tests:
First Lab Shots now posted at Imaging Resource.
GH4 with Nocticron image samples at Cameras.reviewed.
Panasonic Lumix GH4: Product Overview – Adorama Photography TV (Youtube).
B&W from a GH4 4K Stream (Outbackphoto).
North American preorders, shipping date and price:
GH4 camera at Amazon (Click here), Adorama (Click here), BHphoto (Click here), and Panasonic (Click here). Price: $1,698. In Canada at Vistek (Click here).
GH4 camera with interface unit at Amazon (Click here), Adorama (Click here) and BHphoto (Click here). Price: $3,298
Interface unit only at Amazon (Click here), Adorama (Click here), BHphoto (Click here) and Panasonic (Click here). Price: $1,998
Europen preorders, shipping date and price:
Germany: Wexcameras, Marcotec-shop.de.
UK at Wexphotographic, CameraWorld, UKdigital, CVP, TipTop.
Holland at Fotohanskeuzekamp.
Belgium at Fotokonijnenberg.
Norway at Fotovideo.
Sweden at Cyberphoto, Skandinavianphoto.
Finland at Telefoto, Topshot, Verkkoauppa.
France at Photocineshop.