Spark triggers a camera best when it is in manual mode and manual focus.
Infrared Triggering
Infrared triggering is possible via the button on Spark
Make sure the Spark is pointed directly at the IR sensor on the camera and that you are in range
The camera drive mode will need to be adjusted in order to receive IR trigger input from Spark. For information on how to do this, visit the Spark Help page
Timelapse
Select time lapse from the menu on the left hand side of the Spark app.
Set the interval between photos and the duration of your time lapse.
Preview the total number of photos and amount of final TL video footage at the bottom of the app.
Once the TL is uploaded, you can disconnect from the phone/app. You do not need to remain connected to the app for the time lapse to finish.
The app will provide countdown information as the timelapse progresses.