Pentax on Monday evening debuted two new compact digital cameras, including the Optio A40, the ultra-slim Optio V10, as well as its DA 18-250mm F3.5-6.3 ED AL [IF] ultra zoom lens for digital SLRs. As the latest model in the Optio A series, the Optio A40 offers 12 megapixels of optical resolution and three different types of Shake Reduction includi
