Nikon D3200 hands-on: 24-megapixel sensor, high-res screen, external mic input, comes in red - The Verge
How to set-up and external mic on a DSLR - YouTube
Hacked: time limit during video recording now removed for the Nikon D3100/D5100/D7000 - Nikon Rumors
SG 108 DV Stereo Video Shotgun Mic DSLR Camera Microphone for Nikon D3100 D5100 Canon 5D 550D 600D 650D 700D Camera DV Camcorder|microphone pendant|microphone powermicrophone processor - AliExpress