The digital era...

To start this subject I think is important to admit that we are immersed in a digital era. That's why I don't want to leave the subject without discussion it, as I think that giving information about it helps to explain a lot of aspects. Let's start with a clear definition of what digital photography is.

Digital photography, as opposed to film photography, uses electronic devices to record the image as binary data. This facilitates storage and editing of the images on personal computers, and also the ability to show and delete unsuccessful images immediately on the camera itself. Both forms of photography, however, use optical lenses to focus light onto the respective medium.

While film photography uses photographic media that reacts when exposed to light (creating a picture), digital photography uses a photosensitive plate that translates the wavelength of the light that strikes it into 1's or 0's, hence the name digital. The sequence of 1's and 0's that make up the photograph is called a file. The file, and effectively the photograph, can be reproduced perfectly and also transferred over the internet or other forms of digital communication without loss of quality.

Digital cameras include features not found in film cameras such as the ability to shoot video and record audio. Some other devices, such as mobile phones now include digital photography features.

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