Canon's latest pro camera uses an APS sized sensor:
High-end Canon SLR counters Nikon | Tech News on ZDNet
As with the 1D Mark II, the sensor is the APS-H size that shrinks the field of view by a factor of 1.3 compared with traditional 35mm film SLRs. That means a 50mm lens on a Mark III has the field of view of a 65mm lens on a traditional film SLR. (The APS-H size is right between the APS-C sensor, which has a 1.6 crop factor and is used in Canon Rebel XTi and 30D SLRs, and the full-frame sensor, which matches 35mm film and is used in the 5D and 1Ds Mark II...
Curious. Why introduce another sensor dimension?
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