Sony SLT-A57 Overview
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Sony's SLT-A57 is the replacement for the original A55 fixed-mirror, electronic viewfinder SLT. The A57 still features a 16MP sensor and LCD viewfinder but incorporates them into essentially the same body as the more expensive A65. Use of the latest Bionz processor means the A57 offers a wider-than-ever selection of photographic features and image processing modes. There's also an optional HVL-LE1 video-lighting LED panel.
At its core, the A57 is a well put-together compendium of Sony's technological advances since the introduction of the A55 two years ago. This makes it a solid and proven performer for anyone stepping up to a DSLR from a compact camera or ILC, and one that concedes little in terms of either value or performance to its competitors from Canon, Nikon and Pentax.
| Body type | Compact SLR |
| Max resolution | 4912 x 3264 |
| Effective pixels | 16 megapixels |
| Sensor size | APS-C (23.5 x 15.6 mm) |
| Sensor type | CMOS |
| ISO | Auto, 100, 200, 400, 800, 1600, 3200, 6400, 12800, 16000 (25600 with boost) |
| Lens mount | Sony/Minolta Alpha |
| Focal length mult. | 1.5× |
| Articulated LCD | Fully articulated |
| Screen size | 3″ |
| Screen dots | 921,000 |
| Max shutter speed | 1/4000 sec |
| Format | MPEG-4, AVCHD, H.264 |
| Storage types | SD/SDHC/SDXC/Memory Stick Pro Duo/ Pro-HG Duo |
| USB | USB 2.0 (480 Mbit/sec) |
| Weight (inc. batteries) | 618 g (1.36 lb / 21.80 oz) |
| Dimensions | 132 x 98 x 81 mm (5.2 x 3.86 x 3.19″) |
| GPS | None |
The A57 combines a high-quality 16 MP sensor, easy access to shooting parameters, and class-leading video performance. And does this while providing an equivalent shooting experience, whether composing images via the EVF or rear LCD.
Good for: Users who frequently switch between EVF and rear LCD viewing and video-shooting enthusiasts.
Not so good for: Dedicated sports shooters and those who prefer an optical viewfinder.
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