Nikon announced the Nikon D7100 digital SLR camera, a successor to the hugely popular Nikon D7000. The new model inherits the D7000’s viewfinder, shutter assebly, 2016-pixel RGB metering sensor, dual SD memory card slots, weatherproof body, EN-EL15 battery and core functionality; and adds a new 24-megapixel sensor with no low-pass filter, an Advanced Multi-CAM 3500DX...