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Canon EOS-1D Mark III Digital SLR
Blazing Shooting Speed and Near-Instant Response
Ask any professional what camera speed and responsiveness are worth. Fast response is desirable not just for sports or action photography. It can make the difference between capturing or missing that once-in-a-lifetime shot in just about any photographic genre.
With its astounding 10 fps maximum continuous shooting speed, the EOS-1D Mark III is the fastest digital SLR in the world (as of February 2007). This achievement is even more remarkable when you consider the sheer amount of data movement associated with a 10.1 million pixel sensor. It is also incredibly responsive. The EOS-1D Mark III has the least lag time of any EOS Digital SLR (55ms, reducible to as low as 40ms via Custom Function IV-13-1). At shutter speeds of 1/60 second and higher, the viewfinder blackout time is an ultra-short 80ms.
Outstanding Burst Rate
The 1D Mark III can capture up to 110 consecutive full-resolution JPEG images or up to 30 RAW images in a single continuous burst (at shooting speeds up to the full 10 fps).
Other Performance Highlights
The 1D Mark III provides shutter speeds to 1/8000 second. Flash sync speed has been improved to 1/300 second with Canon Speedlites. The continuous shooting rate can be freely changed using Custom Function III-16. The high-speed range provides choices from 2 fps to 10 fps. The low-speed range provides speeds from 1.3 fps to 9 fps.
A Totally New AF System
The EOS-1D Mark III incorporates new Canon autofocus (AF) technologies that bring about improvement in key performance areas for most professional users. The area-type AF system has 19 selectable high-precision cross-type points plus 26 assist points for a total of 45 AF points. The cross-type sensors offer added precision when shooting with f/2.8 and faster lenses. The superior speed, precision, and low-light sensitivity of this new system will be especially noticeable when shooting with f/2.8 zoom lenses. At first glance, the view through the finder may appear to be the same as previous EOS-1D series cameras. The AF system used in the 1D Mark III, however, is of an entirely new architecture and operates differently. Note that, for the first time, cross-type points are now available at the outer edges of the sensor oval as seen in the viewfinder.
Flexible, Customizable AF Coverage
The 26 additional assist points enable the user to expand the coverage area of any manually selected primary AF point. An assist point can be added to either side of a selected AF point, or a ring of six AF points can be activated around a manually selected point. Assist points can be added to any of the 19 selectable primary AF points. Moreover, Assist points can be used not only in the AI Servo AF mode but also in the One-Shot AF mode.
Separate AF Processing Unit
The EOS-1D Mark III uses an entirely separate AF processing unit, dedicated solely to AF operations, including driving the lens. This dedicated CPU design performs AF computations three times faster than with the previous EOS-1D Mark II N. The faster AF detection and computation make it possible for the 1D Mark III to achieve its remarkable 10 fps maximum shooting speed with full AI Servo tracking.
Superior Overall AF Performance, Especially in Low Light
The new area-type AF sensor features increased pixel sensitivity, which delivers markedly improved focusing performance in low-light situations. Compared to the 1D Mark IIN, the new Mark III offers AF sensitivity one full stop better in dark scene areas.
Overall, the new AF system is better able to detect and react to a grossly out-of-focus image, more quickly driving the lens to proper focus. In addition, important new Custom Function control over AF gives the photographer numerous ways to tailor camera AF operation to specific shooting needs. The user can, for example, quickly switch between the inner and outer nine primary AF points. The new AF system can better adapt to sudden changes when tracking moving subjects, and the photographer can control how the camera responds to events, such as the sudden full press of the shutter release button.
AF Micro-Adjustment
An example of the flexibility and power of the EOS-1D Mark III's new AF system. It's the first time this degree of control has ever been in the photographer's hands. If a critical photographer ever finds that his system seems to consistently focus slightly in front of or behind the intended subject, the EOS-1D Mark III's AF Micro-adjustment allows the user to adjust this in fine increments to put the sharp-est plane of focus back where they'd like it to be. And it even allows a user to have different adjustments for different Canon EF lenses, if that's necessary (up to 20 different lenses can be accommodated).
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