Sound converter turning acoustic energy into electrical signal — condenser for quiet detail, dynamic for ambient rejection. Placement makes or breaks a take.
The microphone sits between the actor and the editing suite — it determines whether the voice cracks or sounds like it's from a studio. A misplaced microphone ruins an otherwise perfect take, and you only notice it hours later in the edit. The choice between condenser and dynamic is not a matter of taste, but a technical necessity that defines your entire sound mix.
Condenser microphones react to minimal air pressure changes — ideal partners for indoor scenes and synchronized dialogue in controlled environments. They require phantom power (48V) but also pick up every whisper: breathing, rustling paper, air conditioning. This is your friend for quiet interviews or monologues, your enemy for outdoor shots with wind. Dynamic microphones, on the other hand, ignore subtle disturbances — they focus on the main sound source and naturally filter out ambient noise. When your actor is moving, the camera is filming an action, or you're on a live shoot, the dynamic microphone saves the day.
Placement determines over 80 percent of sound quality. A lavalier microphone (clip-on) sits 15–20 cm below the larynx, anchored firmly in the fabric — don't let it dangle. A boom microphone is lowered into the frame from above, minimally visible, always at the same height as the sound source. The classic mistake: positioning it too far away and then artificially boosting it in the edit, which amplifies noise. Better: get close, then adjust in the mix. Microphone types — cardioid, omnidirectional, figure-eight — also influence what you record and what you don't. Cardioid pickup pattern focuses on direct sound and dampens side interference; omnidirectional pickup records all around.
On set, every microphone needs physical protection: windscreens (pop filters or fuzzy covers) against breath noise, stable stands or grips, redundant cables. The best sound is achieved when the sound mixer is present from the script read-through — checking room acoustics, planning volume levels, preparing backup equipment. A second, independent microphone as a backup is not a luxury, but standard practice on professional shoots. Your recording must be right before the edit; there is no correction that doesn't lead to a loss of quality.