Sony has launched the Cyber-shot DSC-T77 and DSC-T700 ultra-compact digital cameras. Replacing the DSC-T70 and T300 respectively, both maintain the 10-megapixel sensor of their predecessors. The T77 is Sony’s thinnest model and has a 3-inch touch panel LCD screen. The T700 has all the features of the T77 plus 4GB of internal memory and a hi-resolution 3.5-inch wide touch panel. The T700 has a photo album-like database and is aimed at enthusiasts who want to store, display and share their images easily with others.