51.4MP CMOS medium format Sensor 43.8x32.9mm
X-Processor Pro
Detachable 3.69M-dot EVF
2.36M-dot touchscreen LCD back panel
Compact and lightweight body
Weather resistant structure
FUJINON GF Lens
Image Quality: The world's highest level of photographic image quality is produced by the integration of a large 43.8x32.9mm CMOS sensor (FUJIFILM G Format) and image design technology cultivated by Fujifilm's 80+ year history.
http://www.fujifilm.com/products/digital_cameras/gfx/fujifilm_gfx_50s/