Photography can be referred to as a process of creating still or moving pictures by the methods of capturing the live data by observing the radiations and storing it on a sensitive medium such as electromagnetic film or electronic sensors. Traditionally used to “tell the camera” the film speed of the selected film on film cameras, film speed numbers are employed on modern digital cameras as an indication of the system’s gain from light to numerical output and to control the automatic exposure system.
The ancestor of the photographic camera was the camera obscura Camera obscura (Latin for “dark room”) uses the natural phenomenon that occurs when an image of a scene at the other side of a screen (or a wall, for instance) is projected through a small hole in the screen to form an inverted image (left to right and upside down) on an inner surface of the camera obscura, opposite to the opening.
We’ve factored in the quality, availability, versatility and price of each model when making our picks, and included a range of different types of camera so you can find the one that’s right for you (don’t forget to pick up one of the best memory cards , too).
The focal-plane shutter is primarily associated with the single lens reflex type of cameras, since covering the film rather than blocking light passing through the lens allows the photographer to view through the lens at all times except during the exposure itself.
If the f-number is decreased by a factor of âˆš2, the aperture diameter is increased by the same factor, and its area is increased by a factor of 2. The f-stops that might be found on a typical lens include 2.8, 4, 5.6, 8, 11, 16, 22, 32, where going up “one stop” (using lower f-stop numbers) doubles the amount of light reaching the film, and stopping down one stop halves the amount of light.