The given image represents the cross-sectional view of a camera with its parts. When we look at the camera, the first and foremost thing we see is an eyepiece which helps us to locate and capture the image. It is just placed above the Digital sensor, which majorly focuses on capturing the digital image.
Just below the Digital Sensor, we can be able to identify a shutter which functions while clicking up the button to ensure the image has been captured correctly. A rotating mirror can be seen in the camera to adjust the correct position of the image which is being clicked. The top section of the camera contains a focusing screen, which plays an important role in adjusting the image in such a way that it captures the image with high resolution, thus enabling us to click the best image. One of the best things about the camera is that the pentaprism has been placed on top of the focusing screen, which is an optical prism which redirects the light and helps us to produce the better image without any external noise.
Finally, Lens elements are fixed inside the camera, through which a person visualizes the image before clicking it. Hence, it plays a major role in this entire part of the camera.