8, and f/4. 48, f/1. | Photo: Antonio G. Both the iPhone 18 Pro and Pro Max have an adjustable mechanical iris in their main camera modules to let more or less light into the sensor, allowing users to shoot at f/1. You can, of course, let the camera select your aperture automatically, but the manual aperture control comes along with other new pro controls allowing you to dial in shutter speeds, manual white balance, and even manual focusing.
The variable aperture isn’t the cool part of the iPhone 18 Pro’s camera.
