Many of the medium format cameras that shoot at well over 100 megapixels tend to achieve those high resolutions through multi-shot techniques rather than upping the resolution of the sensor itself. Phase One, however, is turning to brute force. Its new XF IQ4 camera system revolves around a 151-megapixel backside-illuminated sensor that should capture the finest details of a portrait without any extra tricks. This also uses a new platform that moves the imaging processor into the main digital camera back, giving you RAW image editing and processing right on the device.
Via: Photo Rumors
Source: Phase One