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How Does a Camera Work?

How Does a Camera Work? We'll Tell You Photography Enthusiasts

While clicking those lovely pictures on vacation, did you ever wonder how your camera captures these nice pictures. For those who are interested in photography, let's see its working.
PhotograFeed Staff
Last Updated: Sep 29, 2018
Vintage Camera
Camera and the art of photography is probably one of the most revered inventions of today.
Film Camera
Although the idea of capturing an image is hardly a novelty anymore, with the advent of film cameras and recently the digital camera, the truth is that cameras have changed the way we see the world.
It allows us to preserve and retain the precious moments for years together. So how does a camera preserve and capture our beautiful memories? Here is a look at the basic functions and working of a camera.
How do Film Cameras Work?
Compact Film Camera And Cartridge
The word camera is derived from the word "chamber" and that is what the earlier cameras were placed in.
With the technological revolution, cameras have come a long way from the "camera obscura" or the "dark chamber" cameras in the 1900s. However, the basic functioning of the camera remains the same. So every camera essentially is a lightproof box encasing three elements, the mechanical, chemical (the film), and the optical element or the lens.
The working of a camera is based on the fundamentals of reflection. As we know, light travels through different media at different speeds.
So the speed of light would vary when it travels in air than when it travels through a glass medium. When you focus your camera on an object, the light bounces of it, and strikes the glass or plastic lens. This slows down the speed of light and allows the rays to bend as they enter the lens.
As the light rays diverge from the source, the lens allow the rays to converge on a single point where the image can be formed. Commonly known as the film surface of a camera, this light-sensitive material records the image. Later when processed with certain chemicals, the image is visible.
Along with this basic structure, a manual camera may also contain an aperture control, a diaphragm that regulates the amount of light that enters a lens, and shutter just before the light sensor. The function of the shutter is to expose the light sensor to a consistent amount of light.
Silver And Black Slr Camera
The amount of time the shutter is open determines the amount of light that reaches the film/light sensor surface.
The shutter speed or rather the time that the shutters are left open, is how photographers control picture quality and certain effects such as the picture of a moving object with the blurring.