What the camera button does and how to change it
The iPhone 16 has a dedicated camera control button on the right side of the phone, below the volume buttons. By default, it opens the camera app or takes a photo when you press it. You can change what this button does by going to Settings > Camera > Camera Control and selecting a different action from the list. The button will then perform that action instead of opening the camera.
Apple gives you several options for what the camera button can do. You can set it to switch between photo and video mode, adjust exposure, change the lens (zoom), or control flash. Some people reassign it to a different app entirely, like Notes or a third-party camera app, though the built-in options are usually faster and more reliable.
Key Takeaways
- The camera button is the physical button on the right side of your iPhone 16, below the volume controls.
- You change what it does in Settings > Camera > Camera Control, where you pick from Apple's built-in options.
- Common reassignments include switching between photo and video, adjusting exposure, or changing zoom level.
- You can also set the button to launch a different app, though this is slower than using the built-in camera functions.
Step-by-step: changing the camera button in Settings
Open the Settings app on your iPhone 16 and scroll down to find Camera. Tap it, then look for Camera Control near the top of the menu. You will see the current assignment — usually "Camera" by default.
Tap Camera Control to see all available options. The list includes Photo, Video, Portrait, Cinematic, Macro, Exposure Compensation, Lens Selection, and Flash. Select whichever action you use most often. Once you pick one, the button will when ready start doing that instead of opening the camera app.
If you change your mind later, you can go back to the same menu and pick a different action. There is no limit to how many times you can switch it.
What each camera button option does
Photo is the default. Pressing the button opens the camera in photo mode, or takes a photo if the camera is already open. Video switches to video recording mode or starts recording if the camera is already open.
Portrait opens portrait mode, which blurs the background. Cinematic switches to cinematic video mode, which adds depth-of-field effects to video. Macro activates macro mode for close-up shots. Exposure Compensation lets you brighten or darken the image by sliding your finger up or down on the button. Lens Selection lets you switch between the different cameras (wide, ultra-wide, telephoto) by pressing the button multiple times or sliding. Flash cycles through flash modes (off, on, auto).
Most people reassign the button to Lens Selection or Exposure Compensation because those are actions you use while taking a photo, not before opening the camera. If you rarely use portrait mode or video, reassigning the button to one of those can save you a tap.
Using third-party apps with the camera button
You can also set the camera button to open a different app entirely, though Apple does not list this as an official option in the Camera Control menu. To do this, you use the Shortcuts app to create a custom action, then assign that shortcut to the button through Settings > Camera > Camera Control.
Open the Shortcuts app, tap the plus icon to create a new shortcut, and add an action that opens the app you want. For example, you could create a shortcut that opens Notes, Reminders, or a third-party camera app like Halide. Save the shortcut with a clear name, then go back to Settings > Camera > Camera Control and look for your shortcut in the list.
This method works, but it is slower than using the built-in camera functions because the Shortcuts app has to launch first. For everyday use, sticking with one of Apple's native options is usually faster.
Troubleshooting: button not responding or not changing
If the camera button is not responding at all, restart your iPhone 16. Press and hold the side button and one of the volume buttons until the power-off slider appears, then slide to power off. Wait a few seconds, then press the side button again to turn it back on.
If you changed the button assignment but it is still doing the old action, make sure you actually tapped the option in Settings and did not just view the menu. Go back to Settings > Camera > Camera Control and confirm the new action is highlighted. If it is not, tap it again and wait a moment for the change to save.
If the button itself feels stuck or unresponsive even after a restart, it may be a hardware issue. Try cleaning around the button with a dry cloth to remove any dust or debris. If that does not work, contact Apple Support or visit an Apple Store.
Why you might want to change the camera button
The default camera button opens the camera app, which is useful if you want to take a photo quickly. But if you are already in the camera app and want to adjust something — like zoom in, brighten the image, or switch to video — pressing the button again does nothing. That is why many people reassign it to Lens Selection or Exposure Compensation, so they can make those adjustments without leaving the camera.
If you rarely take photos but often use video, reassigning the button to Video means you can start recording with one press instead of opening the camera and then tapping the video icon. The same logic applies to portrait mode, macro, or any other feature you use regularly.
Frequently Asked Questions
Can I set the camera button to do different things depending on what app I am in?
No. The camera button assignment is global — it does the same thing no matter what app you are using or what you are doing. You can only have one action assigned at a time.
What happens if I set the camera button to open a different app?
The button will launch that app instead of opening the camera. This works through the Shortcuts app, but it is slower than using the built-in camera options because Shortcuts has to load first. For most people, the native camera functions are faster.
Can I undo a camera button change and go back to the default?
Yes. Go back to Settings > Camera > Camera Control and select Photo to restore the default behavior. You can change it as many times as you want.
Does changing the camera button affect how the camera app works?
No. The camera app itself works the same way. You are only changing what the physical button does — the app's features and settings remain unchanged.
What if my camera button is broken and will not respond?
Restart your iPhone first. If the button still does not work after a restart, try cleaning around it with a dry cloth. If it remains unresponsive, contact Apple Support or visit an Apple Store, as it may be a hardware defect.