Sony ILCE-7RM3 Instruction Manual page 34

To shoot movies
Press the MOVIE button to start/stop recording.
To play back images
Press the
desired image using the control wheel.
To delete displayed image
Press the (Delete) button while an image is displayed to delete it. Select
[Delete] using the control wheel on the confirmation screen, and then
press the center of the control wheel to delete the image.
To shoot images in various shooting modes
Set the mode dial to the desired mode depending on the subject or the
functions you want to use.
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(Playback) button to play back images. You can select the