Question

Which part of camera acts like the retina of the eye ?

• A. Aperture
• B. Lens
• C. Film
• D. Shutter

Hint:

To remember the analogies: Retina \(\leftrightarrow\) Film/Sensor, Lens \(\leftrightarrow\) Lens, Pupil \(\leftrightarrow\) Aperture, Eyelid \(\leftrightarrow\) Shutter.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
This question draws an analogy between the human eye and a camera, asking to identify the camera component that has the same function as the retina in the eye.

Step 2: Detailed Explanation:
Let's compare the parts: \[\begin{array}{rl} \bullet & \text{Retina (Eye): A light-sensitive layer at the back of the eye where the lens forms an image. It contains photoreceptor cells (rods and cones) that detect light and convert it into neural signals. } \\ \bullet & \text{Film/Sensor (Camera): A light-sensitive material (in traditional cameras) or an electronic sensor (in digital cameras) placed at the focal plane. It captures the image focused by the camera lens. This is the direct equivalent of the retina. } \\ \bullet & \text{Lens (Eye vs. Camera): Both have a lens to focus light and form an image. So, the camera lens is analogous to the eye's lens. } \\ \bullet & \text{Aperture (Camera): An adjustable opening that controls the amount of light entering the camera. It is analogous to the pupil in the eye. } \\ \bullet & \text{Shutter (Camera): A mechanism that controls the duration for which the film/sensor is exposed to light. It is analogous to the eyelid. } \\ \end{array}\]

Step 3: Final Answer:
The film (or digital sensor) in a camera performs the same function as the retina in the eye, which is to capture the light image.