Nikon tonight brought out its long planned D5100. The camera has a brand new, 180 degree variable swiveling LCD with a sharp 921,000-pixel output and a 1,000:1 contrast ratio. Video is the same 1080p30 as on the D3100 and D7000, but a sensor tweak gives it a new Night Vision mode for very low light: it can record in ISO 102,400 to get the moment when seeing the shot is more important than the amount of noise.
