Question

short note on photography

Answer 1

Photography is the science, art, application and practice of creating durable images by recording light or other electromagnetic radiation, either electronically by means of an image sensor, or chemically by means of a light-sensitive material such as photographic film.[1

Typically, a lens is used to focus the light reflected or emitted from objects into a real image on the lights sensitive surface inside a camera during a timed exposure. With an electronic image sensor, this produces an electrical charge at each pixel, which is electronically processed and stored in a digital image file for subsequent display or processing. The result with photographic emulsion is an invisiblelatent image, which is later chemically "developed" into a visible image, either negative or positivedepending on the purpose of the photographic material and the method of processing. A negative image on film is traditionally used to photographically create a positive image on a paper base, known as a print, either by using an enlarger or by contact printing.

Answer 2

Answer:

Photograph are visual source of modern indian history . With the discovery of art of photography, photographs of various persons, events,objects,structure places were clicked . Through these photographs we get information of the person or an event in visual format .Comparatively photographs are considered to be more reliable. The photograph of an event give a visual image of the event whereas photograph of an object or a structure helps in understanding its nature .The photograph of a person gives information about the physical features , dressing style etc.