Fujifilm has announced that the GFX 50S medium-format mirrorless camera will be available for purchase in the US in late February. The GFX 50S is Fujifilm’s first medium-format digital camera and will go head to head with the similarly-priced Pentax 645Z and more expensive offerings from Hasselblad and PhaseOne. It has a new 51.4-megapixel 43.8mm x 32.9mm sensor (that’s nearly twice as large as a 35mm “full frame” sensor), Fujifilm’s X-Processor Pro imaging processor, 1080p video recording capability, and a detachable electronic viewfinder.