Portability is key with P-backs, each one able to capture to a Compact Flash or Microdrive card and be tethered to a computer via a FireWire connector. The P20 features 16 megapixels, a 12-stop range and ISO of 50 to 800. It captures up to 45 images per minute using a Hasselblad V series camera, and up to 30 images per minute when using Mamiya. An internal card slot can write up to 16 mb per second.
    The back’s Secure Storage System checks every CF card inserted, making sure its integrity is intact before shooting, thus preventing lost images. ISO, white balance and file format can be set directly on the back, while a 2.2-inch LCD screen displays clear images, even in bright sunlight. The P family’s rechargeable lithium ion battery lasts about 250 captures (up to four hours) and the backs can also be powered externally through the FireWire cable for continuous shooting. P-backs work with medium-format cameras from Contax, Hasselblad and Mamiya, as well as 4 x 5 cameras from Arca Swiss, Cambo, Rollei, Linhof, Toyo, Sinar, Plaubel and Horseman, making P-backs a flexible option.

Retail price: $11,990
Further information: www.phaseone.com