At the higher end of its camera upgrades, Nikon today upgraded its P-series models that straddle the line between point-and-shoot and digital SLRs. The P5100 takes the previous P5000 from 10 to 12 megapixels and draws on the new EXPEED imaging chip to reach ISO 3200 (auto-adjustable up to 5 megapixels) and improved, 12-point face detection. A new
