Canon EOS 70D Instruction Manual page 181

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.179). Note that
you cannot merge multiple images already recorded on the card.
Are multiple exposures possible with Live View shooting?
Shooting multiple exposures is also possible with Live View shooting
(p.215). Note that [A1: Aspect ratio] will be fixed at [3:2].
Will auto power off take effect during multiple-exposure
shooting?
As long as [52: Auto power off] is not set to [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.
P Multiple ExposuresN
Merged Multiple-Exposure
JPEG
1
1
1+JPEG
1+JPEG
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