The Canon EOS 7D is a mid-range digital SLR (DSLR) camera with Canon-designed 18-Megapixel APS-C size CMOS sensor. Canon announced the 7D on 1 September 2009. The Canon 7D is designed for speed, with dual DIGIC 4 chips to speed processing of these large 14-bit files, as well as keep up with the shutter's 8-frame-per-second top speed. Even the sensor had to be tweaked to enable such speed, with an 8-channel readout to more quickly draw the image off the sensor.The Canon 7D's buffer can handle 94 JPEGs at top speed, or 15 RAW images. For its part, the Canon 7D's shutter mechanism is rated at 150,000 cycles, and is the same design used by the 1D-series of Canon digital SLRs.