Pentax Ricoh has introduced the 15th generation in its ruggedized line-up of point-and-shoot cameras, the WG-3 GPS and WG-3. Its newly-designed 4x optical zoom lens with a maximum aperture of F2.0 at wide-angle, back-illuminated 16-megapixel CMOS image sensor, and sensor-shift shake reduction system helps to deliver sharp, high-quality, low-noise images, according to the company.