What Does video camera Mean
A camcorder or video camera is a generally portable device that allows images and sounds to be recorded , converting them into electrical signals that can be reproduced by a specific device.
In the beginning, camcorders used electronic tubes as sensors and, very different from what is found today, they were composed of thermionic valves that, through scanning by an electron beam, allowed images to be formed with a lens system .
In the 1980s , interconnected charging devices were developed , which enabled a considerable reduction in the weight and size of cameras and a higher quality of image and sound.
The operating process of camcorders begins with the decomposition of light between three components (red, green and blue) through a prism of dichroic mirrors. On the other side of the prism are the sensors , which reconstruct the image and forward it to the preamplifier circuits.
The image continues its journey to processors that are responsible for the correction of various parameters. Once the image is ready, it can be recorded or broadcast to a production system , that is, to the network of devices that make up the work environment.
In the case of TV cameras, two main types can be recognized: portable , which are associated with a signal recording system, and studio , which work integrated into a production system .
Home camcorders, for their part, are intended to record images using video tapes or digital formats such as DVD or memory cards, such as SDHC. Once the capture has been made and stored, the user can reproduce the images on a computer or by connecting the camera to the TV, depending on the possibilities offered by the product.
In recent years, with the arrival and rise of the Internet , and more recently YouTube and social media, camcorders have gone from being a luxury of those who showed a genuine interest in the art of filming to an indispensable accessory for every individual who boasts of belonging to the present.
In the mid-90s, webcams captivated the millions of Internet users who had already become loyal followers of the chat phenomenon ; Thanks to these small and relatively inexpensive peripherals , it was finally possible to make video calls from the comfort of home.
The first versions of these peculiar descendants of conventional camcorders had a series of weaknesses that would make them obsolete today: first, their video quality was very poor, with extremely low resolutions and number of frames per second; on the other hand, many of these models did not include a microphone. Regarding the first limitation, it is very likely that the Internet connection speed limit available at that time (as well as its instability) outweighed the lack of technology to improve performance.
In no time, such devices became more sophisticated, offering options and a level of quality that just a few years earlier would have been unimaginable. However, the Web spread to mobile phones, and that caused the biggest social impact of the last decade, forcing manufacturers to incorporate as many functions into their products as possible.
The camcorder is one of the most important components of a smartphone, allowing you to video conference, take photos, capture videos, interact in innovative ways with applications and games, and even read QR ( Quick Response ) codes to access content instantly online.
Although the quality of traditional cameras is still much higher than that offered by a mobile phone, many professionals carry both types of device with them, since it is not always necessary to take a perfect capture , but to do it quickly and comfortably.