Documentary makers are continually striving to reduce subjectivity. For example, they want to avoid using narration, instead allowing the characters to speak for themselves; they also want to present large amounts of original sound from the scene.
為了避免過度主觀，紀錄工作者在技術上努力修正，例如避免使用旁白，代之以事件主角的敘述、大量現場原音重現等；但有人認為，作者的主觀仍然存在於攝影機位置的安排、剪接畫面的選擇等環節。