Why Dual Cameras on Your Smartphone?

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In recent years, smartphones have upgraded with multiple cameras on one side, often dual or triple rear cameras. Recently, even front cameras, like the iPhone X, have dual cameras. But why do smartphones have multiple cameras, and are they better than the traditional single camera? Let’s find out.

Why Multiple Cameras?

Smartphone users expect high-quality cameras, with sharp, bright, colorful, and detailed photos at the touch of a button. However, fitting a large DSLR camera into a small phone is challenging. To improve phone cameras without making them bigger, multiple cameras were introduced.

This concept started in 2011 with dual rear cameras for 3D images, evolving to perform more functions today. Multiple cameras enhance image quality.

How Do They Work?

Multiple cameras in smartphones serve specific functions, such as capturing close-up details with a low-aperture, wide-angle lens and distant subjects with a longer lens. Specialized image processing software combines the strengths of each camera, resulting in a single, brighter, and sharper image. In summary, the collaboration of multiple cameras and advanced software enhances the overall quality of the captured photos.

Design Reasons

• Complementary Functions: The second camera excels in a different aspect of photography, complementing the primary camera.
• Perspective Information: Two cameras capture perspective, creating a depth map to differentiate foreground and background.
• In dual camera setups, one may focus on zooming or capturing more detail, adding extra features to your camera.

Front Cameras Also Go Dual

Certain phones, such as the iPhone X, have two front cameras that do more than just take pictures. The TrueDepth camera system makes a 3D map of your face, enabling features like Face ID

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