Photography

Seires of cameras on a desk
Photography is the art and practice of using light to produce images and record them onto certain sensitized surfaces, usually chemically coated plastic film or a memory card. These materials are embedded inside cameras, devices that take photographs. There is no limit to the subjects a person may photograph. Common subjects include landscapes, people, commercial products, food and buildings, among others. Modern photographers use both analog and digital cameras.
 
Analog cameras contain a curved glass lens, a shutter and film. As light rays naturally reflect off the photo's subject and hit the lens at different angles, the lens redirects them to a point behind the camera's aperture to form a real image. When taking a photo, the camera's shutter opens as the film inside is placed to where this real image is. Light then hits the film, initiating various chemical reactions that expose the film. The shutter then closes and fresh film is moved behind the shutter for the next picture. These cameras yield better image quality and do not require electricity.
 
In digital cameras, the redirected light rays hit a semiconductor sensor that converts the light into electrical energy. A firmware drive interprets the electrical energy into binary code that represents every pixel of an image. This information is then recorded onto an internal memory storage unit. Digital cameras provide better convenience, portability, storage and ease of development. (Photo: Wikimedia Commons)

World leaders to commemorate 100th anniversary of the end of WWI

Celebrate British wildlife with these 17 serene images

13 award-winning images you wouldn't know were taken by students

Otherworldly light pillars captured over Whitefish Bay

Winning shots show off U.K. sites and the photographers who love them

These pet portraits poke a little fun at humans

31 astonishing images to boost your appreciation of the night sky

New book sheds light on mountain caribou's fight against extinction

20 microscopic images that will open your eyes to a whole new world

14 unearthly X-rays highlight the inner workings of zoo animals

10 photos that will make you appreciate the stunning diversity of nature

Utah comes alive in a spectacular array of fall colors

SPONSORED