Canon EOS 5Ds Instruction Manual page 233

FAQ
Are there any restrictions on the image-recording quality?
All JPEG image-recording quality settings can be selected. If 41
or 61 is set, the merged multiple-exposure will be a 1 image.
Image-Recording
Quality Setting
JPEG
1
41/61
1+JPEG
41/61+JPEG
Can I merge images recorded on the card?
With [Select image for multi. expo.], you can select the first single
exposure from the images recorded on the card (p.231). Note that
you cannot merge multiple images already recorded on the card.
Are multiple exposures possible with Live View shooting?
With [On:Func/Ctrl] set, you can shoot multiple exposures with Live
View shooting (p.255). Note that [Full-frame] will be applied for
[z4: Crop/aspect ratio] for shooting.
What file numbers are used for saving merged multiple-exposures?
If all images are set to be saved, the merged multiple-exposure
image file number will be the serial number coming after the file
number of the final single exposure used to create the merged
multiple-exposure image.
Will auto power off take effect during multiple-exposure shooting?
As long as [52: Auto power off] is set to any setting other than
[Disable], the power will turn off automatically after 30 min. of non-
operation. If the auto power off takes effect, multiple-exposure
shooting will end, and multiple-exposure settings will be canceled.
Before starting the multiple-exposure shooting, the auto power off
will take effect as set with the camera, and multiple-exposure
settings will be canceled.
Single Exposures
JPEG
1
41/61
1+JPEG
41/61+JPEG
P Multiple ExposuresN
Merged Multiple-
Exposure
JPEG
1
1
1+JPEG
1+JPEG
233