Apple lets iPhone users customize the Camera Control button's apps and gestures
Apple's Settings menu includes a Camera Control pane under Settings > Camera > Camera Control, letting users choose which app launches via the button, such as Camera, Instagram, Code Scanner, or Magnifier. The Controls section also offers Camera Adjustments and a Customize option, allowing users to enable, disable, and reorder six adjustments—Zoom, Exposure, Depth, Cameras, Styles, and Tone—accessible through light presses and swipes.