What is the role of a convex lens in a camera?

What is the role of a convex lens in a camera?

• A. To spread light evenly across the image sensor
• B. To focus light onto the camera sensor or film
• C. To eliminate lens distortions
• D. To reflect light to create a photographic effect

Answer: (B)

The role of a convex lens in a camera is primarily to focus light onto the camera sensor or film. A convex lens, also known as a converging lens, is shaped so that it bulges outward in the center. When parallel rays of light enter this lens, they are refracted inward and converge to a point known as the focal point. This ability to focus light is essential for capturing clear, sharp images. In the context of a camera, the focal point of the lens corresponds to the plane where the image sensor or film is located. By adjusting the distance of the lens from the sensor, photographers can manipulate the focus to achieve desired sharpness for various subjects. The lens plays a crucial part in the quality of the image, making it possible to capture the detail and depth of field in photographs. This capability to direct and concentrate light is what allows cameras to produce recognizable images of the scenes being photographed.

The role of a convex lens in a camera is primarily to focus light onto the camera sensor or film. A convex lens, also known as a converging lens, is shaped so that it bulges outward in the center. When parallel rays of light enter this lens, they are refracted inward and converge to a point known as the focal point. This ability to focus light is essential for capturing clear, sharp images.

In the context of a camera, the focal point of the lens corresponds to the plane where the image sensor or film is located. By adjusting the distance of the lens from the sensor, photographers can manipulate the focus to achieve desired sharpness for various subjects.

The lens plays a crucial part in the quality of the image, making it possible to capture the detail and depth of field in photographs. This capability to direct and concentrate light is what allows cameras to produce recognizable images of the scenes being photographed.