Shotgun microphones use an interference tube and a narrow forward pickup to focus on speech or other sources at a distance. They are used with cameras, boom poles, location rigs, theatre and video production, but their off-axis rejection depends on frequency and the acoustic environment. Compare length, polar pattern, sensitivity, self-noise, phantom or battery power, connector, suspension and wind protection. Indoors, reflections can affect a long shotgun’s sound, so placement, room treatment and the surrounding mounting system matter as much as the microphone’s headline directionality.