Well, video camera or camcorder is one of the familiar gadgets. You may capture motion objects through using a camcorder. But, do you know exactly how does a video camera work? Have you ever analyzed its function? If not, then this article is eligible for you to read.
By operating video camera or even using your cellphone camera, you can become an independent movie maker or YouTube star! Or else you can start a career in a film production company. However, that’s a different story. I have discussed it already in some of my previous articles. Today I will enlighten you about how video cameras work. So let’s get started.
Main function Operated by Brain Through Eyes
Watching a movie camera or camcorder for the first time can feel like the insertion of an electronic device. When you open it, you can usually see a lot of different types of mechanical and electrical features. But do you know the camera lens, the processor, the electric motor or all the other parts do nothing in terms of creating video footage without your capturing power. It’s all about your eyes and your brain.
You have to know first what you want to capture. Set a mental image or visual in your head at first before shooting. Then determine the angle and set all the features which required for the desired footage. Then there is eye work. Let’s take a little idea about how our eyes see an object.
Light reflected from an object and travels through your eyes to your brain. At first an inverted image of the object create inside your eye. Later, it reaches the brain and it helps to see the real object again. As long as the object is in front of your eyes, light comes from it to the eye. Then brain is able to see it. But even if an object you see is suddenly removed, it does not immediately move away from your brain. Its existence remains in your brain for a while.
A video camera is a type of camera that used to capture moving scenes. These cameras previously used celluloid film, magnetic tape, and a variety of digital storage devices to capture images. Although these cameras originally developed for the television industry, now used in various purposes and household activities. Let’s apprise about technical function of a video camera.
Classic Movie Camera Vs. Digital Video Camera
The classic movie camera works a lot like the old plastic film camera. Older plastic film cameras needed to open the shutter and take in the light when taking photos and the film inside would move one after the other. But the movie camera needs to constantly open and close the shutter — it usually opens and closes 24 times per second.
With the shutter open and closed, the plastic film inside also needs to rotate continuously so that it can capture all the photos frame by frame. This long plastic film then inserted into a projector machine — where the photos in the film change position very quickly, one after another and thus you see the final result as a video or moving picture.
When the first video camera invented, plastic film replaced by magnetic plastic video tape. It’s much cheaper, easier than film, and doesn’t require any development before using it. Today’s modern electronic digital video cameras use digital video. These cameras chip the information from a light-sensitive chip lens into a digital format without taking a photo of an object directly — this microchip is called a CCD.
In other words, every frame in a digital camera does not store as a direct image but as a digital format or number. And since its video is in digital format, it can be stored on DVD, various flash drives, hard drives, etc. If you want to save the video in digital format, you can edit it on a computer, upload it to a website, copy and play it on different devices, which was never possible with the previous classic video recording.
Brief History of Video Camera
John Logie Baird’s cameras were significant among the earliest video cameras. These are made with mechanical nipco discs. These were used for experimental campaigns from 1918 to 1930. All video camera tube-based designs, such as Vladimir Zoaricin’s Iconscope and Philo Farnesworth’s Image Dissector, replaced Baird’s method in 1930.
These designs were widely used until 1980. Later, some updated version came to the market such as CCD and later CMOS pixel sensor tube technology that solved the problems with solid-state image sensors. It fixed some core problems such as image burning and accelerates the speed of digital video work. The proliferation of digital TV increased the use of digital video cameras and by the 2010, all video cameras became digital. Since digital video camera work s more efficiently.
With any ordinary digital camera of today or your phone’s camera is undoubtedly capable of capturing awesome photos. Professional photography cameras or DSLR cameras are outstanding. But the problem is that in the still photos, the world became static and silent. Fortunately, video camera or camcorders can take moving images of the objects moving around us and present the world to us accurately. If you know how does a video camera work both theoretically and technically, you can make some extraordinary footage for your cinema or other productions/ purposes.
Hopefully from today’s article you can easily understand how video camera works. I will write some more detailed film related articles on this site and there I will also explain some technical terms in a simple way. Stay connected. Happy Read 🙂