The Galaxy S9 and S9+ have rear cameras with adjustable aperture settings, allowing the phones to take photos at either f/1.5 or f/2.4. This may mean something to you, but in the event it doesn’t, let me provide a brief explainer.
You might already be familiar with aperture values, or F-stops, as they relate to a camera’s lens. Like the pupil of your eye, the size of a camera’s aperture determines the amount of light that gets in through the lens to the image sensor.
The Galaxy S9 and S9+ have dual-aperture cameras – here’s what that means was written by the awesome team at Android Police.