Photography is an art, science and practice of creating images with a durable record of light or other electromagnetic radiation, either chemically through materials such as light-sensitive photographic film, or an electronic image sensor. Usually, the lens used to focus the light reflected or emitted from objects to images on a light-sensitive surface inside a camera during a timed exposure. Results in an electronic image sensor is the electric charge in each pixel, which is electronically processed and stored in the image file to display the next or digital processing. Resulted in latent image is photo emulsion out of sight, which then evolved into an image that chemistry is visible, negative or positive depending on the purpose and methods of processing of photographic material. Negative image film traditionally used to create a positive image on photographically paper base, known as print, either with the use of magnifying or by printing a contact.