With the ORCA-D2, you can now capture dual wavelength images simultaneously, at wavelength ranges of your choice, and with a wide field of view ? a unique combination that simplifies the challenges of conventional FRET and ratio imaging techniques. The ORCA-D2 contains two CCD devices. Interchangeable optical blocks are used to set the wavelength ranges for each CCD. During image capture, the camera automatically corrects focus, alignment and color shifting to produce high-quality images. Other benefits of the ORCA-D2 include high sensitivity and low noise, courtesy of Hamamatsu's advanced CCD cooling technology; wide dynamic range; standard IEEE1394b interface; and Hamamatsu's proprietary vacuum-sealed chamber technology, which promotes long-term maintenance-free operation with even the most demanding applications.