Stereo Video Shotgun Mic Microphone for Canon EOS 7D 5D MARK II, T2i 550D, Nikon D300s, D3s, Pentax K-7, K-X, Casio EX-F1 Delivering a stereo sound image with superb clarity Pick up pattern 90 degrees or 120 degrees switchable Frequency responses: 30-18000Hz Sensitivity: -40dB (0dB = 1V/Pa at 1 KHz) Compatible all brands of cameras with external microphone terminal (3.5mm plug).