Canon EOS 5D MARK IV Instruction Manual page 275

Merging Multiple Exposures with an Image Recorded on the Card
You can select a 1 image recorded on the card as the first single
exposure. The image data of the selected 1 image will remain intact.
You can only select 1 images. You cannot select 41/61 or
JPEG images.
Select [OK].
The file number of the selected image will be displayed at the
bottom of the screen.
Take the picture.
3
When you select the first image, the number of remaining
exposures as set with [No. of exposures] will decrease by 1. For
example, if [No. of exposures] is 3, you can shoot two
exposures.
The following cannot be selected as the first single exposure: Images
shot with [z3: Highlight tone priority] set to [Enable], images whose
[z5: Aspect ratio] is set to any setting other than [3:2] (p.310), or
images having cropping information (p.491).
[Disable] will be applied for [z1: Lens aberration correction] and
[z2: Auto Lighting Optimizer] regardless of the settings of the 1
image selected as the first single exposure.
The ISO speed, Picture Style, high ISO speed noise reduction, color
space, etc. set for the first 1 image will also be applied for the
subsequent images.
If Picture Style is [Auto] for the 1 image selected as the first 1
image, [Standard] will be applied for shooting.
You cannot select an image taken with another camera.
Select [Select image for multi.
1
expo.].
The images on the card will be
displayed.
Select the first image.
2
Turn the <5> dial to select the
image to be used as the first single
exposure, then press <0>.
P Multiple ExposuresN
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