From the Manufacturer:
The IQ250 is the world’s first CMOS-based medium format digital camera back. The 50-megapixel IQ250 features a Sony CMOS sensor that captures full resolution images up to ISO 6400. Whether photo sessions are held in the studio or on a mountainside, the IQ250 lets photographers capture stunning imagery in available light -- virtually anywhere and any time. With a sensor size of 44x33mm, the IQ250 offers 68 percent more image-capture real estate than any full-frame 35mm DSLR camera and the widest usable ISO range of any medium format camera system. Its phenomenal dynamic range of 14 f-stops enables photographers to capture the most demanding scenes in one shot, while retaining details in highlights and shadows.
Amazing ISO sensitivity
Get high quality images shooting at ISO 100, 6400 or anywhere in between. With this digital back you can capture unique images in available light anytime.
Fluid and responsive Live View
With the fluid and responsive high quality Live View of the IQ250 you will have great composition and focus assistance whether you are using Live View directly on the digital back, connected via USB3 to Capture One, or wirelessly to Capture Pilot.
50 megapixels captures
Capture images of 50 megapixel resolution and of outstanding quality.
14 f-stops dynamic range
Capture the most demanding scenes in one shot and retain details in highlights and shadows with the IQ250 thanks to its abundant 14 f-stop dynamic range.
Long exposures up to an hour
The IQ250 digital back gives you a phenomenal exposure time range, as fast as 1/10000s and as long as one hour (the actual exposure time range is limited by the camera attached).
Touch control on high resolution display
It is easy to access the features of any IQ2 digital back. You can swiftly navigate all menus either by using the simple 4-button navigation, the touch screen display or a combination of the two. Each backs large 3.2 inch touch screen makes it simple to access menus and features with the tip of your finger. The same intuitive controls can be used to browse, zoom and pan captured images. Combined with the 1.15 megapixel high-resolution display, checking image focus and detail is easy and precise.
Capture, wireless or wired
Image capture is a breeze with an IQ2 digital back. Whether you are shooting to a memory card, shooting tethered to a computer using USB3 or FireWire, these digital backs leverage cutting edge technology and are designed to give you a fast and continuous capture experience.
Connect your iPad or iPhone wirelessly to an IQ2 digital back directly or via an access point and enhance your capture process and productivity. When connected you can control image captures remotely and incoming or stored images can be reviewed and rated.
All IQ2 models support fast flash sync speeds of up to 1/1600s giving you full control for balancing flash and ambient light in your images whether you are in the studio or on location.
The IQ250 gives you full composition and detail control; it offers fluid and responsive, high quality Live View a truly valuable tool to help you shoot the perfect capture in the studio or on location.
Built to last
The IQ2 digital backs combine functional design with rugged build quality. The backs are made of 100% aircraft grade aluminum and all electronic connectors and ports are protected with automatic retracting hatches or rubber covers to ensure they work continuously even in the toughest shooting environments.
Value Added Warranty
Phase One's Value Added Warranty protects your IQ250 digital back for five years. Featuring the Investment Protection Program, free repair of manufacturing defects, and 24/7 online access to support forums and knowledge base articles, the Value Added Warranty also adds to the protection of your IQ250 with a free loan unit during repair and free camera platform exchange.