Photography

Photography


Photography is the process, activity and art or creating still or moving pictures by recording radiation on a sensitive medium such as photographic film or an electronic sensor. Light patterns reflected or emitted from objects activate a sensitive chemical or electronic sensor during a timed exposure, usually through a photographic lens in a device known as a camera that also stores the resulting information chemically or electronically. Photography has many uses for business, science and pleasure.

Genres of Photography;

Aerial - Black and White – Commercial – Documentary – Fashion – Fine Art – Forensic – Glamour – High Speed – Illustration – Landscape – Nature – Paparazzi – Portrait – Photojournalism – Still Life – Stock – Underwater – Wedding


Camera;
This is a device that records images, either as a still photograph or moving images known as videos and movies. The term comes from the Camera Obscura (Latin for ‘dark chamber’) an early mechanism of projecting images where an entire room functioned as a real-time imaging system; the modern camera evolved from the camera obscura.

Shutter;
In photography, a shutter is a device that allows light to pass for a determined period of times, for the purpose of exposing photographic film or a light sensitive electronic sensor to lights to capture a permanent image of scene.


Shutter Speeds;

B
1/1
2/1
4/1
8/1
15/1
30/1
60/1
125/1
250/1
500/1
1000/1

Each of these is a fractions worth of a second




Aperture;
In optics, an aperture is a hole or an opening through which light travels. In photography this can be measured in increments called F-Stops


Lens;
The lens of a camera captures the lights form the subject and brings it to focus on the film.


Exposure Control;
The size of the aperture and the brightness of the scene controls the amount of light that enters the camera during a period of time, and the shutter controls the length of time that the light hits the surface but the lights hits the recording surface. Equivalent exposure can be made with a larger aperture and a faster shutter speed or a corresponding smaller aperture and with the speed slowed down.