The Pentax T20's main upgrade over the six megapixel T10 is its 1/2.5" seven megapixel CCD imager. Other than the resolution boost, the only other spec change that stands out is an increase of the maximum ISO sensitivity from 400 to 800, although it should be noted that this new setting is only accessible in manual mode.
Other features retained from the original camera in the Pentax T20 are an smc Pentax-branded 3x optical zoom lens that provides a fairly standard 35mm-equivalent focal range of 38 - 113mm, Secure Digital plus 12MB of built-in storage memory, NTSC / PAL video and USB 2.0 connectivity (type unspecified), as well as a built-in flash and a macro mode that allows focusing as close as 15 centimeters. Power comed courtesy of a proprietary Lithium Ion rechargeable battery. The Pentax Optio T20 is scheduled to go on sale from October 2006, for the same $350 list price at which its predecessor retailed.