「Brightness and Contrast in Manga ,and their relation to mood and feeling 」
While medium contrast can be used creatively, it's easier to pinpoint what the extreme contrasts can do:
• High contrast usually relates to clarity and surprise, while difference in brightness convey how positive or negative that feeling is. (Impact is highly dependent on the previous panels. Eg: High contrast/High brightness after a scene completely set at night)
• Low Contrast often gives a feeling of other-worldliness, so it's used for dreams, flashbacks, dissociation and narration. Brightness again delivers the emotion when it's cut off from the environment and time.