Canon EOS Rebel T6i EF-S 18-55mm IS STM Lens Kit Instruction Manual - Page 86

G Shooting Backlit Scenes When shooting a scene having both bright and dark areas, use the (HDR Backlight Control) mode. When you take one picture in this mode, three continuous shots are taken at different exposures. This results in one image, with a wide tonal range, that has minimized the clipped shadows caused by backlighting. Shooting Tips  Hold the camera firmly. While shooting, hold the camera firmly and steadily. In this mode, three shots are aligned and merged into a single image. However, if there is significant misalignment in any of the three shots due to camera shake, they may not align properly in the final image.  The flash will not fire. In low light, the AF-assist beam may be emitted (p.103).  See the cautions on page 87. HDR stands for High Dynamic Range. 86