Canon EOS Rebel T6i EF-S 18-55mm IS STM Lens Kit Instruction Manual - Page 376

Troubleshooting Guide During Live View or movie shooting, a white or red icon is displayed.  It indicates that the camera's internal temperature is high. If the white icon is displayed, the still photo's image quality may deteriorate. If the red icon is displayed, it indicates that the Live View or movie shooting will soon stop automatically (p.218, 253). Movie shooting stops by itself.  If the card's writing speed is slow, movie shooting may stop automatically. Use an SD Speed Class 6 " " or faster card. To find out the card's reading/writing speed, refer to the card manufacturer's Web site, etc.  If the movie shooting time reaches 29 min. 59 sec., the movie shooting will stop automatically. The ISO speed cannot be set for movie shooting.  In shooting modes other than , the ISO speed is set automatically. In the mode, you can freely set the ISO speed (p.226). The exposure changes during movie shooting.  If you change the shutter speed or aperture during movie shooting, the changes in the exposure may be recorded.  Zooming the lens during movie shooting can cause changes in the exposure regardless of whether the lens's maximum aperture changes or not. The changes in the exposure may be recorded as a result. The subject looks distorted during movie shooting.  If you move the camera to the left or right quickly (high-speed panning) or shoot a moving subject, the image may look distorted. 376