Abu-Ali Al-Hasan Ibn Al-Haytham
Abu-Ali Al-Hasan Ibn Al-Haytham, an Arab writer who lived around AD 1000, noticed that light coming through a pinhole in a dark room threw an upside-down image on the adjacent wall. In 1544, a Flemish astronomer named Gemma Frisius used Alhazen’s idea of making drawings of an eclipse. Read further to find out what happened next.
Invention Of Cameras
Around the late 1500s, a discovering was made that the image can be made sharper by just placing a curved piece of glass or lens over the pinhole. A diaphragm can be used to change the size of the pinhole, not only that it makes the image sharper. A concave mirror was used to convert the image upright again. This camera was called the camera obscura, used to make outlines and maps. Late in the 1600s, it was made portable.
With the creative enhancement of technology, cameras keep upgrading, again and again, each time better than before. In the modern era, the cameras are easy to handle and light, which means only light from the lens reaches the films. The diaphragm makes it easier for us to focus without putting much effort. A focusing device makes the image clear and sharp, giving it more detail.
Ever since the invention of cameras, people are able to capture memories, keeping us connected with our past. Camcorders comes from the family of cameras, it is used to make films and videos. It works like cine-cameras, capturing numerous still pictures of a moving image. The image and the sound are changed into electronic signals, which is then combined and played together on the television, broadcast, movies and so on. Then comes the single-shot camera, this camera takes one photograph at a time. Additionally, most have one lens for the viewfinder and to expose the film. Furthermore, a fixed focused camera is simple, though frustrating to use at times. Why is that so? Majorly because you cannot change the lens focus, which means you have a fixed size. You just need to select what you wish to capture and then point and shoot it. These form of cameras use electronic devices to set speeds, focus the lens and wind the film on.
The magic of instant cameras print a photograph seconds after it is shot; this involves two lenses, one which is for the viewfinder and one to take the photograph. Cine-cameras are used for making movies, for a long time and till date. The trick is the strategy of moving, our eyes cannot focus on still pictures moving at a fast pace unless it is shown in slow motion.
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