Sony SLT A57

Released April, 2012
New: SLT A58 (Apr, 2013)
  • 16 MP
  • APS-C 23.5 x 15.6 mm CMOS
  • 3" LCD
The fact that the screen is articulated adds another level of versatility to this camera's design, helping users to maximise the benefits of the Sony Alpha a57's excellent Live View system as well as its movie mode, particularly when you need to shoot subjects from awkward perspectives.
by TechRadar (Jul, 2012)
8.9 Out of 10

Camera Rocket Review Our evaluation of the Sony SLT A57

Image Quality

RAW image quality independent of lens

SLT A57
8.8
D5200
9.8
EOS 60D
8.6
DxOMark Low light, DxOMark Color depth and DxOMark Dynamic range

Focusing

How fast and easily does the camera nail focus

SLT A57
6.2
D5200
8.2
EOS 60D
7.1
cross type focus points and focus points

Responsiveness

How much delay is there between you and your photo?

SLT A57
10.0
D5200
10.0
EOS 60D
10.0
continuous shooting

Reviews

What do the experts think?

SLT A57
9.4
D5200
9.2
EOS 60D
9.2
Reviews from sonyalpharumors.com, techradar.com, photographyblog.com and 1 more

8.9

Camera Rocket Score

Image Quality, Focusing, Responsiveness and Reviews

SLT A57
8.9
D5200
9.3
EOS 60D
8.9

Benchmarks Real world tests of the Sony SLT A57

Low light image quality Highest ISO setting that still achieves great image quality

SLT A57
785 ISO
D5200
1,284 ISO
D3200
1,131 ISO

Resolution Results from photos of standard resolution charts

SLT A57
2,400 LPH
D3200
3,000 LPH
SLT A65
3,000 LPH

Continuous shooting Delay between fully pressing shutter to image capture

SLT A57
12 fps
Alpha A5000
3.5 fps
Rebel T3i
3.7 fps

Battery life How many photos per battery charge (CIPA)

SLT A57
550 photos
EOS 60D
1,100 photos
SLT A55
330 photos

Color depth The number of variations of color the camera can capture

SLT A57
23.4 bits
Rebel T3i
22.1 bits
EOS 60D
22.2 bits

Dynamic range Maximum range a camera can capture in one image from light to dark

SLT A57
13.0 ev
EOS 60D
11.5 ev
Rebel T3i
11.5 ev

Photo Gallery Wallpaper quality closeups of the camera

Reviews Word on the street for the Sony SLT A57


9.0
As with Live View, continuous phase-detection AF is possible whilst shooting movies on the A57, a distinct advantage over most DSLR cameras and fast enough to rival Compact System Cameras like the Panasonic Lumix GH series.

8.0
The versatile swivelling LCD screen encourages creativity when it comes to framing stills and videos, the EVF is great and image quality is very pleasing - particularly when it comes to noise control.

Overall

8.8 Out of 10

What People Are Saying Give it to me straight

Lens

To achieve the full 12fps you need to set the exposure mode dial to the dedicated Tele-zoom Continuous Advance Priority AE shooting mode, which locks the exposure at the start of the sequence and uses the 1.4x tele-zoom function to record the center part of the image, resulting in an 8.4 megapixel photo.
by Photography Blog (Jun, 2012)
Apart from a familiar ridge housing the pop-up flash above the Alpha lens mount, its most distinguishing feature is the traditional handgrip complete with leather-look rubberized covering that extends around the side of the camera.
by Photography Blog (Jun, 2012)
The grandly named By Pixel Super Resolution Technology is also employed when using the Sony Alpha a57's 2x Clear Image Zoom, an enhanced alternative to the notoriously destructive digital zoom feature that we've often criticised in the past.
by TechRadar (Jul, 2012)

Sensor

The Sony A57 can shoot full-resolution 16.1 megapixel pictures at up to 12fps whilst maintaining continuous auto focus and auto exposure, an incredibly fast rate for such an inexpensive camera.
by Photography Blog (Jun, 2012)
Dedicated buttons provide fast access to key settings such as exposure compensation, ISO and the camera's HD movie mode, while access to the display, white balance, Picture Effect and drive mode options are offered via the four-way pad on the back of the camera.
by TechRadar (Jul, 2012)
Raw files offer further scope for advanced image processing, packing in plenty of detail.
by TechRadar (Jul, 2012)

Focus

Sticking with the subject of action photography, the Sony Alpha a57 outguns its predecessor when it comes to sequential image capture, clocking up a standard rate of 8fps at full resolution, 10fps in Continuous Priority AE (full resolution frames, but the aperture remains constant) or a class-leading 12fps in the camera's top-whack continuous burst mode.
by TechRadar (Jul, 2012)
As the light levels drop, however, the camera does struggle, even with its AF-assist lamp enabled to help it along.
by TechRadar (Jul, 2012)
You also benefit from the previously mentioned, newly-honed Object Tracking AF feature.
by TechRadar (Jul, 2012)

Video

With Full HD 1080p movie recording capability, stereo sound, SteadyShot INSIDE and a class-leading 12fps continuous burst mode, we expect that the DSLR manufacturers of the Sony Alpha a57's closest competitors will certainly be watching closely to see how this new model fares in the real world, and what move Sony will make next.
by TechRadar (Jul, 2012)
The A57 can record 1080p HD 1920 x 1280 pixel movies at either 50fps or 25fps (PAL), or 60fps and 24fps (NTSC) in the AVCHD format, or 1440 x 1080 pixels at 30fps/25fps in the MPEG-4 format, useful as this format can currently be shared more easily.
by Photography Blog (Jun, 2012)
Serious video enthusiasts have the option of plugging in an external mic to improve sound quality further, although a lack of manually-controllable options over this aspect of the video mode may prove to be a little less impressive to some.
by TechRadar (Jul, 2012)

Screen

You also get Full HD (1080p) movie recording with stereo sound with the Sony Alpha a57, plus a high-resolution, 921,000-dot, 3-inch LCD screen, which can be flipped out from the back panel and swivelled any way you want, to enable easy composition when shooting subjects at odd angles.
by TechRadar (Jul, 2012)
The A57 also has a clever eye level sensor that switches off the rear screen's info display as you bring your eye close to the excellent optical viewfinder, plus a facility that automatically flips the same display through 90° should you turn the camera on its side to shoot in portrait fashion.
by Photography Blog (Jun, 2012)
In Standard mode, by default JPEGs are faithfully coloured and display a pleasing level of sharpness, although shots will take a little extra post-shoot sharpening if you feel the need to boost the detail a little further.
by TechRadar (Jul, 2012)

Specifications Full list of technical specs

sensor

Type CMOS
Megapixels 16 MP
Resolution 4912 x 3264
Size APS-C
Area 23.5 x 15.6 mm
Crop factor 1.5x
Pixel size 22.9 microns
Light sensitivity 100 ISO to 16,000 ISO
Light sensitivity (Boost) 16,000 ISO to 25,600 ISO
Codecs
  1. RAW
  2. JPEG
Self cleaning sensor Yes
Tested vertical resolution 2,400 LPH
Tested horizontal resolution 2,400 LPH

focus system

Type Phase detection
Focus points 15
Cross type focus points 3
Supports continuous Yes

shutter

Min 30 s
Max 1/4000 s

form factor

Size 132 x 98 x 81 mm
Thickness 81 mm
Weight 618 g
Is weather sealed No

features

Includes a GPS No
Supports HDR Yes
Automatic panorama Yes
Create realistic 3D images Yes
Image stabilization Sensor shift

video

Video 1920 x 1080 @ 60 fps
Shoots video in 24p Yes
Shoots high speed video No
External mic jack 3.5mm
Autofocus while shooting video Phase detection
Autofocus type Phase detection
Autofocus supports continuous Yes

display

Type LCD
Size 3"
Resolution 921 k dots
Has a touch screen No
Has a flip out screen Yes
Supports live view Yes

viewfinder

Viewfinder mirror Translucent
Viewfinder Viewfinder
Type Electronic
Coverage 100%
Magnification 1.1x
Viewfinder size 0.72x
Display type LCD

performance

Max continuous shooting 12 fps
Battery life 550 photos
Continuous shooting
  1. 12 fps, JPEG
  2. 10 fps, JPEG
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