Connecting Canon EOS-1D X Mark III to the Intervalometer App

Step-by-step instructions for pairing your Canon EOS-1D X Mark III with the Intervalometer for Canon app over Bluetooth.

App Store

Google Play

Before you start

When the Intervalometer app first starts, allow Bluetooth access so it can discover and connect to your EOS-1D X Mark III.
Allow the app to use location / localisation services when prompted. On many phones this permission is required by the operating system to scan for nearby Bluetooth devices, even though the app does not use your location for tracking.
On the EOS-1D X Mark III, Network settings and Bluetooth must be enabled before pairing is possible. If you have never connected the camera wirelessly, follow the first two steps below to enable them.

Pair the EOS-1D X Mark III with the Intervalometer app

Enable Network settings.
Press the MENU button and navigate to [Network settings]. Select [Enable] to activate wireless functions.
Enable Bluetooth.
Still in the Network settings menu, select [Bluetooth settings] and set it to [Enable].
Select Pairing.
In the Bluetooth settings, select [Pairing] to begin the pairing process.
Skip the QR code and start pairing.
A QR code screen appears. Because you already installed the Intervalometer app, select [Do not display] to skip the QR code and begin pairing immediately.
Open the Intervalometer app on your phone.
Unlock your phone and start the Intervalometer app for Canon.
Tap "Add new camera" in the app.
In the main control screen, tap the camera icon in the top-right corner labelled Add new camera.

The Intervalometer app now scans for nearby Bluetooth devices and lists available cameras.
Select your EOS-1D X Mark III from the list.
When your camera appears, tap the entry that matches your EOS-1D X Mark III to start pairing.
Confirm Bluetooth pairing on the phone.
Your phone shows a Bluetooth pairing request. Confirm the request to allow the Intervalometer app to connect to the EOS-1D X Mark III.
Confirm pairing on the camera and check it is complete.
Select [OK] on the camera screen, then press the SET button to finish pairing.

In the Intervalometer app, you see your EOS-1D X Mark III listed as the active camera, and the main control screen is ready to trigger the shutter.
Start using the Intervalometer app.
You are now ready to use the Intervalometer app as a Bluetooth remote and interval timer for your EOS-1D X Mark III.

After pairing

Once the connection is established, you can start and stop exposures from your phone without touching the camera.

Set exposure time and interval directly in the app.
Use BULB mode on the camera and let the app control how long each exposure runs.
Run an open-ended sequence or stop automatically after a chosen number of images.
Use the Bluetooth link to minimise camera shake when starting and stopping exposures.

Cancel pairing and start again

If you change phones or run into connection problems, delete the existing pairing and set it up again.

On the EOS-1D X Mark III

Press MENU and go to [Network settings] → [Bluetooth settings].
Select [Check/clear connection info].
Choose the smartphone you want to remove and confirm the deletion.

On the smartphone

Open your phone's Bluetooth settings.
Find the entry for your EOS-1D X Mark III and remove or forget the device.

After removing the pairing on both camera and phone, follow the steps in the pairing section above to connect the Intervalometer app again from scratch.

Troubleshooting

Phone cannot find the camera

Make sure the camera is on the pairing screen (after selecting [Pairing] in Bluetooth settings) and that you have started the pairing process.
Check that Bluetooth is enabled on your smartphone and that the EOS-1D X Mark III Bluetooth setting is set to [Enable].
If the camera still does not appear, cancel pairing on both camera and phone, restart both devices, and try again.

Camera shows a different smartphone name or will not pair

On the camera, go to [Network settings] → [Bluetooth settings] → [Check/clear connection info] and clear any smartphones you no longer use.
On your phone, remove old EOS-1D X Mark III entries from the Bluetooth device list.
Repeat the full pairing process, including tapping Add new camera in the Intervalometer app.

Intervalometer app does not connect, but the camera shows a paired phone

Ensure no other app is trying to control the camera in the background. If you use Canon's own remote control app, close it completely before using the Intervalometer app.
In the Intervalometer app, tap your camera entry or use the reconnect option to establish the Bluetooth link again.
If the problem persists, delete the pairing on both camera and smartphone (as described above) and set it up again from scratch.

Camera shows "Connection target not found"

On the camera, remove the existing phone entry under [Network settings] → [Bluetooth settings] → [Check/clear connection info].
On your phone, open Bluetooth settings and remove / forget the EOS-1D X Mark III entry.
Start the pairing process again from the beginning and, in the Intervalometer app, use Add new camera to scan for the EOS-1D X Mark III and add it as a new device instead of tapping connect on an old entry.

If none of these steps solve the issue, please contact us at help@intervalometer.app and include your camera model, phone model, and a short description of what happens during pairing.