The three-year wait for a successor to Canon's EOS 5D has finally come to an end with today's announcement of the Canon EOS 5D Mark II digital SLR. And the wait was worth it, based on this model's revolutionary specs: This full-frame camera is the first camera to record 1920 by 1080p video.
When it was first introduced, the 5D broke new ground as the first digital single-lens reflex camera with an image sensor that matches the size of a 35mm film frame. A "full-frame" camera is capable of delivering the full breadth of an SLR lens, such that a 24 to 105 mm lens actually delivers the actual wide angle of 24mm. This ability is a boon to photographers who want to shoot wide-angles, be it landscapes or events in close-quarters, such as weddings or parties.
Many digital SLRs have sensors whose size is smaller than that of a 35mm film frame, though. In those cases, the camera has what's commonly referred to as a "crop factor" or "focal-length multiplier" (for example, a Canon EOS Digital Rebel XSi has a 1.6x multiplier), and a 24 to 105mm lens effectively becomes a 38 to 168mm lens, instead. The smaller sensor means that the edges of the lens are cropped off, which gives the effect of zooming into the center of the lens.
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