Pentax USA has announced three compact digital cameras in time for the Photo Marketing Association annual trade show opening at the end of the month.

The Pentax Optio T10 offers a 6 megapixel, 3x optical zoom with a 3 inch LCD touch display screen.

The Pentax Optio W10 is a 6.0 megapixel digital camera and the third model in Pentax's waterproof digital line-up.

With a 2.5 inch monitor, 6.0 megapixels and a 3X optical zoom, the affordable Pentax M10.

Pentax also announced a new naming system for its camera range. The Optio T series, for example, designates the touch-screen series, Optio W indicates the waterproof series, and Optio M indicates a mid-range series.

The T10 will cost $349.95, the Optio W10 for under $300.00 and the M10 for $229.95. All cameras will be available in March.

We are awaiting confirmation from Pentax to a UK launch and release date.