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| Alpha A55 |
| at a glance |
| 4912 x 3264 |
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| 3.0" lcd viewer |
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| MS PRO (HG) duo, SD, SDHC |
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| NP-FM500H Li-ion |
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Sony Alpha A55 review summary |
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| camera date |
Aug 10 | |
| pixels / class |
16.7M | SLR digital camera |
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| overall rating |
 | 12 reviews |
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| ease of use |
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| camera body |
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| digital features |
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| photogr. ctrls |
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| user profile |
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| comments |
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| Sony Alpha A55 specifications |
| lens / zoom | Sony Alpha, Minolta A |
| focus / macro | auto | manual |
| metering mode | 40 segment, center weighted, spot |
| aperture | auto | manual |
| white balance | auto, 6 presets, color temperature, custom |
| shutter | auto | manual / 30s - 1/4000s, B |
| exposure | +/- 2.0 EV in 1/3 EV steps |
| flash / mode | hot shoe; pop-up - 6 modes / GN 12 (iso 100, meters) |
| viewfinder | ttl electronic |
| iso ratings | 200 - 12800 in 1EV steps, 25600 in Multi-Frame NR Mode |
| image size | 4912x3264, 3568x2368, 2448x1624 |
| image format | raw, jpeg |
| image compr. | fine, standard |
| lag/cycle times | |
| remote control | self timer 10s, 2s |
| video options | AVCHD / MP4, with audio - 1920x1080 (60fps, 30fps); 1440x1080, 640x480 (30fps) |
| audio options | |
| connectivity | usb 2 HS; hdmi mini |
| storage | MS PRO (HG) duo, SD, SDHC |
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| extra features | imager size 23.4mm x 15.6mm
histogram display
live view
PictBridge compatible
anti dust system
sensor shift image stabilization
tiltable lcd screen |
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Sony Alpha A55 announcement clippings
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The Sony SLT-A55 is equipped with a translucent mirror, which enables light passing through the lens to be simultaneously received by the image sensor and the auto focus sensor, allowing continuous shooting and continuous focusing at speeds never before possible. The A55 offers the world's fastest 10 fps high-speed burst shooting with continuous AF (TTL phase-detection) in an interchangeable-lens digital camera with APS-C sensor.
Because of its structure, the Translucent Mirror Technology™ does away with the motion of raising and lowering the mirror. The absence of the moving mirror mechanism contributes to making the whole body size significantly compact compared to traditional DSLR cameras.
By eliminating the need to raise and lower the mirror between shots, the technology makes it possible to achieve focusing while images are captured. Existing systems can only focus in the interval between image capture, limiting the ability to track fast moving subjects. The cameras also have continuous Advance Priority AE Mode and will automatically adjust for the best exposure to help you get the most professional looking results.
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