Sony Alpha 55
![]() SLT-A55V + SAL1680Z | |
Overview | |
---|---|
Type | Digital single-lens translucent camera |
Lens | |
Lens | Interchangeable, A-mount |
Sensor/medium | |
Sensor | APS-C CMOS Sensor |
Maximum resolution | 16.2 megapixels |
Film speed | ISO equivalency 100 to 12,800 in 1.0 EV steps, boost to 25,600 in Multi-Frame Noise Reduction mode |
Storage media | SD/SDHC/SDXC/Memory Stick Pro Duo |
Focusing | |
Focus modes | Single-shot AF, Automatic AF, Continuous AF, Manual Focus |
Focus areas | 15-point (12 line, 3 cross) phase-detection AF system |
Exposure/metering | |
Exposure modes | Programmed AE (AUTO, AUTO – Flash Off, P), Aperture priority, Shutter priority, Manual, Scene selection |
Exposure metering | TTL full aperture exposure metering system 1200-zone evaluative |
Metering modes | Multi-segment, Centre-weighted, Spot |
Flash | |
Flash | GN 10 at ISO 100 |
Flash bracketing | +` |
Shutter | |
Shutter | Electronically controlled, Vertical-traverse, Focal-plane Shutter |
Shutter speed range | 30 – 1/4000 sec, bulb |
Continuous shooting | 10 FPS / 6 FPS |
Viewfinder | |
Viewfinder | EVF, 100% coverage, 1.10× magnification |
Image processing | |
White balance | Auto / 6 presets / Colour Temperature/Colour Filter / Custom WB |
General | |
LCD screen | 3.0" TFT LCD, 921k dot resolution, variable-angle tilt/swivel |
Battery | NP-FW50 Lithium-ion battery rechargeable battery |
Optional battery packs | Unavailable |
Dimensions | 124 × 92 × 85 mm |
Weight | 441 g (15.6 oz) |
Made in | Thailand |
Footnotes | |
dpreview |
The Sony α55 (model variants SLT-A55V with GPS, SLT-A55 without GPS depending on country) is a midrange-level SLT camera, released in August 2010.
Its design is novel due to its being the first digital single-lens translucent camera (SLT), along with the Sony α33. As an SLT it employs a semi-transparent mirror instead of an opaque mirror, which enables phase detection autofocus in live view.
The design also replaces the optical viewfinder present in conventional DSLR with a high-resolution electronic viewfinder. The translucent mirror is fixed in position so does not have to flip up to take a still image, enabling rapid continuous shots of up to 10 frames per second. The static mirror also eliminates "mirror slap", the noise produced by the movement of the mirror during a shutter actuation, making the A55 quieter than standard DSLRs.
The A55 is one of the first four Sony Alpha DSLR / SLT cameras with video mode included, capable of 1080i. It is also capable of shooting 1080p at 30fps. The SLT design means that it is capable of using phase-detection autofocus during video recording. It has body-integrated image stabilization, and a 16.2 MPx APS-C CMOS sensor.
The camera's body-integrated image stabilization produces heat, causing the camera to stop video recording after these recording times:
Model name | Ambient temperature | Image Stabilization | |
---|---|---|---|
On | Off | ||
α55 (SLT-A55V) | 20 °C (68 °F) | 9 min | Approx. 29 minutes |
30 °C (86 °F) | 6 min | 13 minutes | |
40 °C (104 °F) | 3 min | 5 minutes | |
α33 (SLT-A33) | 20 °C (68 °F) | 11 min | Approx. 29 minutes |
30 °C (86 °F) | 7 min | Approx. 22 minutes | |
40 °C (104 °F) | 4 min | 9 minutes |
Features
[edit]- Konica Minolta A-mount lens bayonet.
Video
[edit]- AVCHD 1920/1080 50i or 60i (depending on region)
- MPEG-4 1080 30p or 25p (depending on region)[1]
External links
[edit]![](http://178.128.105.246/cars-http-upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)