sorry for lack of information. my camera is fixed (for now), because it is 2D scroll RPG game. if i want my character (Sprite) face left I need certain rotation value. I think I gonna try to make new project because when I changed from 4.15 to 4.17 version, it causes numerous errors and perhaps bugs… too?(not certain, maybe). Even though it will be frustrating. but those weird situations irritated myself too much. Anyway… thank you for reading it 