8.1 effective megapixels resolution for clear enlargements up to A3 size , 4x optical zoom Carl Zeiss Vario-Tessar lens , Smile Shutter waits until the subject smiles before firing the shutter with adjustable smile threshold setting , Enhanced Face Detection with high-speed subject tracking for clearer portraits , Large 2.5-inch LCD , HD Output compatible with PhotoTV HD displays for optimised still images on BRAVIA TV , BIONZ processor for enhanced image quality and fast response , Double Anti-blur with Super SteadyShot image stabilisation and High Sensitivity ISO 3200 for clearer handheld shooting in low light , D-Range Optimiser adjusts exposure and contrast in high contrast and backlit scenes