Sony released today its newest translucent-mirror DSLR-style camera – Alpha SLT-A57, that will substitute the Alpha SLT-A55. The 16mp, APS-C-sensored Alpha A57 will contend with two well-known midrange DSLR cameras, the Nikon D5100 and the Canon EOS Rebel T3i.
Not like classic Digital slr cameras and translucent-mirror SLRs like the 1960 Canon Pellix, the SLT system utilizes a fixed internal reflex mirror to take a continuing phase-detection auto-focus system instead of an optical viewfinder; the Alpha SLT series does not have a through-the-lens optical viewfinder. As an alternative, you have a 1.4-million-dot eye-level LCD viewfinder along with a 3-inch LCD screen that tilts.
Just like the Sony Alpha SLT-A77 introduced a year ago, the A57 features a really quick burst-shooting mode that can compete with similarly priced DSLR cameras from Nikon and Canon, each of which top out about 4 fps. In burst-shooting mode, the A57 shoots 12 frames per second with an 8-mp resolution, or 10 frames per second at full 16-mp resolution with aperture secured in the widest setting; the camera’s burst mode lowers down to 8 frames per second in full resolution with the full control of aperture manually. Continuous autofocus and auto-exposure adjustments are both enabled in burst-shooting scenarios.
Video may very well be a powerful suit, as the A57 can record full 1080p video at 60 frames per second in AVCHD format. Manual exposure controls are also available in video recording mode.
So whatever DSLR you may have, it will surely have its edge that other can’t give.