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Sony Alpha A900

Digital Camera Review
March 20, 2009 By Steve Morgenstern 0 Comments (add your own)

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Speed

Speed and Timing

The Sony A900 utilizes dual processors and an innovative shutter design to deliver an outstanding continuous shooting burst rate considering the tremendous file sizes involved.

Sony claims a top burst-mode speed of 5 frames per second. We achieved an average of 4.44 in our lab testing, which is none too shabby, beating the only other camera producing 20+-megapixel images (the Canon 5D Mark II) by a healthy margin.

The Sony A900 offers two continuous-shooting settings; Hi shoots at a maximum of 5 frames per second, Lo shoots at a maximum 3 images per second. When shooting in Extra fine mode, up to 11 images can be captured in a burst, which climbs to 105 in Fine mode and 285 in Standard. Surprisingly, up to 12 RAW files can be captured continuously, slightly more than Extra fine JPEGs.

The Sony A900 offers basic self-timer functionality: 2 second and 10 second. The handheld Remote Commander wireless control also includes a 2-second self-timer release button.

Focus Speed

The Sony A900 autofocus system uses 9 primary, user-selectable focus points plus 10 supplementary ranging points. Autofocus sensitivity ranges from 0 to 18 EV (at ISO 100). An autofocus illuminator is positioned between the grip and the camera lens. According to Sony, its working range is approximately 3.3 to 23 feet (1 to 7m).

There are three choices when selecting a focus area: Wide, Spot, and Local.

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Sony Alpha A900
Digital Camera Review
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