Single and Multi Lens Mode (Ultra Wide, Wide, Tele)

The iPhone's native Camera app uses all lenses at the same time, referred to as Multi-Lens Fusion. It automatically switches between them as needed or combines images taken with different lenses. This all happens automatically and cannot be disabled.

However, in some scenarios it is required just to use a single lens, for example when using physical add-on lenses or for manual camera settings. Having the option to switch between single lens mode and multi-lens fusion is one of the great benefits of ProCamera:

• Single Lens mode is active in semi-automatic SI, manual M, and exposure bracketing EB modes. This means you use each lens (Ultra Wide, Wide, Tele) individually.
• Multi Lens mode is active in automatic A mode. It uses all lenses at once and comes with Multi-Lens Fusion.

The design of the Lens Selector indicates which mode is active:

• Multi Lens: In automatic A mode, a white outline around the whole Lens Selector indicates that all lenses are active
• Single Lens: In semi-automatic SI, manual M, and exposure bracketing EB modes, a blue outline around the highlighted single lens button indicates the currently active lens.

When you want to use an external add-on lens make sure to have Single Lens mode active and select the iPhone camera lens to which the external lens is mounted.

Whether multi lens or single lens mode is active also makes a difference for macro photography.

In Multi Lens mode, the ability to quickly switch lenses is an advantage. Also, combining multiple captures from different lenses into the final photo can result in a more detailed image.

Note that manual camera controls like custom exposure times, manual focus, or a custom white balance are available only in Single Lens mode.