On iPhone models with Dual and Triple camera systems, toggle between 1x, 2x, 2.5x, and .5x to quickly zoom in or out (in A-Mode) or to change the lens (in M/SI-Mode).
When you are in A-Mode, all lenses will be used at the same time, which is referred to as virtual device fusion and allows to quickly change between lenses. Virtual device fusion can yield better resolution and dynamic range, however it does not allow for manual control (such as setting exposure time and focus).
In contrast to other camera applications, ProCamera provides the option to use each lens individually (Ultra Wide, Wide, Tele) as well as to use virtual device fusion with all lenses at the same time.
A white outline around all available zoom factor buttons in the Lens Selector indicates that fusion mode is active – in single lens mode only the currently active lens is highlighted by a white outline.
|A-Mode: Virtual device fusion||
M-Mode: Single lens mode
If you want to use manual controls, continue reading about how to manually set focus, ISO and exposure time in M/SI-Mode.