Dual Aperture is a rear camera feature first introduced on Galaxy S9, Galaxy S9+, and Galaxy Note9. With two f-stop modes, F1.5 mode and F2.4 mode, the dual aperture camera automatically adjusts to the ambient light, almost like the human eye. This helps ensure that your photos come out well in different kinds of light. When it’s bright all around, the lens will shift to F2.4 to keep your photo clear and in focus. While in a dimly lit room or in the dark of night, the lens opens wide to F1.5 to bring in more light and help illuminate the scene before you shoot, so the resulting photo comes out clear. This feature is on by default in Auto mode, so it’s simple to just start snapping away. And if you’re looking for more control, switch to Pro Mode and tweak it to get the photo you want.
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*Dual Aperture supports F1.5 and F2.4 modes. Installed on the rear camera (Galaxy S9)/rear wide camera (Galaxy S9+ and Galaxy Note9).