Sony's SLT-A57 is the replacement for the original A55 fixed-mirror, electronic viewfinder SLT. The A57 still features a 16MP sensor and LCD viewfinder but incorporates them into essentially the same body as the more expensive A65. Use of the latest Bionz processor means the A57 offers a wider-than-ever selection of photographic features and image processing modes. There's also an optional HVL-LE1 video-lighting LED panel.