Canon EOS 5DS R Instruction Manual - Page 477

Troubleshooting Guide Multi Shot Noise Reduction cannot be set. If the image-recording quality is set to RAW or RAW+JPEG, [Multi Shot Noise Reduction] cannot be set. The Live View image or movie shooting image is not displayed during multiple-exposure shooting. If [On:ContShtng] is set, Live View display, image review after image capture, or image playback is not possible during shooting (p.226). Live View shooting ends when multiple exposure shooting is performed. If you perform Live View shooting with [On:ContShtng], Live View function will end automatically when the first exposure is taken. Take the second and subsequent exposures while looking through the viewfinder. The multiple-exposure image is shot in 1 quality. When the image-recording quality is set to 41 or 61, the multiple-exposure image will be recorded in 1 quality (p.233). When I use the mode with flash, the shutter speed becomes slow. If you shoot at night when the background is dark, the shutter speed automatically becomes slow (slow-sync shooting) so that both the subject and background are properly exposed. To prevent a slow shutter speed, under [z1: External Speedlite control], set [Flash sync. speed in Av mode] to [1/200-1/60sec. auto] or [1/200 sec. (fixed)] (p.248). 477