Canon 3818B001 EOS REBEL T1i/EOS 500D Instruction Manual - Page 128

Notes on Movie Shooting Camera's internal temperature increase and image degradation If you continue to shoot movies for a prolonged period, the camera's internal temperature will increase. This can degrade the image quality. While not shooting, turn off the power. If you shoot under direct sunlight or high-temperature conditions, the icon (high internal temperature warning) may appear on the screen. If you keep shooting a movie with the warning icon displayed, the image quality might degrade. You should turn off the power and allow the camera to rest for a while. If the icon is displayed and you keep shooting movies until the camera's internal temperature increases further, the movie shooting will stop automatically. If this happens, you will not be able to shoot again until the camera's internal temperature decreases. Turn off the power and let the camera rest for a while. Playback and TV connection If the brightness changes during movie shooting, that part might freeze momentarily. If you connect the camera to a TV set with an HDMI cable (p.157) and shoot a movie in [1920x1080] or [1280x720], the movie being shot will be displayed at a small size on the TV. However, the actual movie will be properly recorded at the movie recording size that was set. If you connect the camera to a TV set (p.156-157) and shoot a movie, the TV will not output any sound during the shooting. However, the sound will be properly recorded. 128