Sony launch the A57 SLT!

Yesterday Sony introduced the new Sony Alpha A57, the replacement to the Sony A55, and another to incorporate the revolutionary SLT (Single Lens Translucent) technology. Sony has designed the SLT-A57 to appeal to a wide audience of DSLR users, taking on a sophisticated, ergonomic design plus a few additional high-tech features found in the higher enthusiast models such as the A65 and A77.

The Sony Alpha A57 SLT Camera

Specifications

  • 16.1 megapixel APS HD CMOS sensor
  • BIONZ™ image processor
  • 15 Autofocus points with 3 cross sensors
  • Up to 12 frames per second
  • Max 25600 ISO
  • 3.0? articulating & rotating, 921k dot resolution LCD screen
  • Full 1080p HD movie capability
  • 132 x 98 x 81mm dimensions
  • Body only weighs 618g (with batteries)

What does the SLT technology have to offer?

Sony press release -"Limitless creative options are made even more accessible with a brand-new addition to the range of cameras by Sony employing Translucent Mirror Technology. This innovative design directs incoming light to the CMOS image sensor and the AF sensor at the same time, allowing full-time continuous AF during both still and video shooting. Framing, focusing and real-time preview can be achieved on the high-resolution Tru-Finder™ that offers a wide viewing angle and 100% field of view. This allows photographers to capture exactly what they see on the screen."

The Sony Alpha A57 with 18-55mm lens

Main features

The Sony A57 is based around the large 16 megapixel sensor and the latest generation Bionz processor, which together make sure that large amounts of data can be handled effortlessly, with low-noise stills and Full HD video.

Speed - The main upgrade from its predecessor is its capability to capture an outstanding 10 frames per second at full resolution (A55 rate is 7 fps) or 12 frames per second in new Tele-zoom Continuous Advance Priority AE mode, a mode which according to Sony crops the sensor by 1.4x and is perfect for capturing sharp, split second action close-ups, even when your subject is moving.

Video capabilities - The Sony A57 is capable of shooting full 1080p video at 50fps or 25fps in AVCHD progressive format for cinematic results. It doesn’t stop there, as with the Sony A77 you also have full manual control (P/A/S/M modes) and continuous phase detection AF to make sure moving objects remain sharply focused.

Autofocus - Like the Sony A65, the A57 features the same 15-point AF system with 3-cross type sensors to ensure quick, accurate TTL phase detection autofocus. The new improved Object Tracking AF helps to keep faces or selected objects in sharp focus, even when the subject is momentarily obscured. The new Auto Portrait Framing mode helps users who are just starting to simply create pro-style portraits, taking into consideration a number of algorithms such as face detection, composition and the position of your subject.

The Tru-Finder - The Sony A57 features an electronic viewfinder offering 1440k dot resolution with a 100% field of view plus a number of high-resolution information displays to simplify your shooting experience. The A57 also sports an angle-adjustable 3.0" Xtra Fine LCD screen - meanihng your shooting angles are almost limitless.

In Comparison: A55 vs A57

  A55 A57
Megapixels 16.2 16.1
ISO range 100-12,800 100-16,000
Max extendable ISO 25,600 25,600
Image Processor Bionz Bionz
HD Video 1080i 1080p
Autofocus 15 15
FPS 7 12
Card Slot MS / SDXC MS / SDXC
Screen (dot resolution) 3.0" LCD (921k) 3.0" LCD (921k)
Weight 441g* 618g*

*approximate body only weight (with batteries)

The Sony Alpha A57 3" LCD screen