Digital photography is a form of photography which adopts digital cameras to capture images which are digitised and stored on computers. Here, they are edited, published digitally or printed.
Digital photographs are created by computer-based photoelectric and mechanical techniques.
The discipline started to become popular from the 1950s as in 1957 the first digital image and self-contained camera were produced.
Digital photography has different benefits. Firstly, photographers are able to review pictures instantaneity; Secondly, they have a great flexibility and speed in taking pictures and getting results; thirdly, they can store almost an infinite number of images on their laptops. As well as this, digital photographs are easy and cheap to print, and digital cameras can capture more than a hundred photos on the same media device.
At the heart of digital cameras is an image sensor composed of an array of pixels from which the quality of the picture depends. While taking pictures, photographers can select the photo resolution they would like to have.
The images taken by digital cameras have different formats: Raw, Jpeg, Gif and Png. The Raw format indicates that the image is uncompressed and unprocessed. Jpeg is the standardised image compression mechanism and it works well on photographs, naturalistic artwork and similar material. Gif is a format which supports a maximum of 256 colours. Finally, Png is a bitmap graphics format which adopts lossless compression.
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