Sony Alpha 57
Sony α 57
 |
| Type |
Digital single-lens translucent camera |
|---|
| Sensor |
23.5 mm × 15.6 mm, 16.1 effective megapixels CMOS |
|---|
| Lens |
interchangeable, Sony A-mount |
|---|
| Flash |
Built-in flash, Range: approx. 3' - 15' (1 m - 5 m); Auto, Fill-flash, Slow Sync., Rear Sync., Hi-speed sync., Red-eye reduction (on/off selectable for Autoflash and fill-flash mode), Wireless; |
|---|
| Shutter |
electronically controlled, vertical-traverse, focal-plane Shutter |
|---|
| Shutter speed range |
30–1/4000 sec, with Bulb, 1/160 sec X-sync |
|---|
| ASA/ISO range |
Auto: 100-3200; Selectable: 100-16000; Multi Frame NR (up to ISO 25600) |
|---|
| Exposure metering |
Advanced 1200-zone evaluative metering |
|---|
| Metering modes |
Multi-segment, Center-weighted, Spot |
|---|
| Continuous shooting |
up to 12 Frames Per Second |
|---|
| Viewfinder |
0.46" SVGA Xtra Fine EVF (2174 dpi) (Electronic viewfinder) (1,440,000 pixels), Diopter Adjustment: -4.0 to +3.0 m-1, Field of View: 100%, 1.04x magnification |
|---|
| Custom WB |
Auto WB, Daylight, Shade, Cloudy, Incandescent, Fluorescent (Warm white/Cool white/Day white/Daylight), Flash, C. Temp 2500 to 9900 K, C Filter G7 to M7, 15-step, Custom, AWB micro adjustment |
|---|
| Rear LCD monitor |
921k pixel 3-inch TFT LCD |
|---|
| Storage |
Memory Stick PRO Duo™, Memory Stick PRO-HG Duo™, SD memory card, SDHC memory card, SDXC memory card |
|---|
| Battery |
InfoLITHIUM® NP-FM500H (7.2 V) |
|---|
| Weight |
Approx. 618 g (with battery & media); |
|---|
| Made in |
Thailand |
|---|
The Sony Alpha 57 (model name SLT-A57) is a Digital single-lens reflex camera that replaces the A55 in 2012. The camera features an electronic viewfinder and a translucent mirror. The main advantage of a translucent mirror is that it needn't flip up out of the way when taking a picture in order to expose the sensor, but the camera can focus and capture images simultaneously. The camera's 15-point autofocus system can be set to single, continuous or automatic and is arranged towards the centre. The 12 fps burst mode is available only in "speed priority" mode but can reach up to 5.5 fps burst rate in combination with any other settings.
Feature list
- 16.1-megapixel Exmor™ CMOS sensor (4912 × 3264) [1]
- Updated BIONZ™ image processor
- ISO 100 - 16,000 (25,600 with multi-image combination)
- Auto ISO 100 - 3200
- Pull-out three-hinge tilt/swivel 921K dot TruBlack™ LCD screen
- Stereo microphone and external mic socket
- Dust shake sensor cleaning
- second-generation Translucent Mirror Technology™
- 12 fps burst mode at full 8-megapixel resolution
- Tru-Finder™ XGA electronic viewfinder with 1440K dots resolution with full 100% frame coverage.
- AVCHD video recording at 1920 × 1080 (50p (1080p) @ 28 Mbit/s, 50i (1080i) @ 24 Mbit/s, 50i (1080i) @ 17 Mbit/s, 25p (1080p) @ 24 Mbit/s, 25p (1080p) @ 17 Mbit/s, 25p (1080p)) @ 12 Mbit/s)
- MPEG-4 video recording at 1440 × 1080 (approx. 25 fps @ 12 Mbit/s (average bit-rate)[2]
- Live View with full-time Phase Detection AF
- 15-point autofocus sensors.
- SteadyShot™ image stabilization system in body
- 3D Sweep Panorama™
- Full tilt/swivel LCD screen
- Multi-frame noise reduction
- Object tracking AF
Like its successor, the Sony Alpha 58, the Alpha 57 offers no 60i/60p/24p video modes.
References
External links
