Looking at digital camera, a person can visualize it as a combination of a camera along with a miniature computer system that stores images as files or sets of bits, rather than a chemically treated film. Thus it comes to be a fact that there are certain file formats in which these images of photographs captured by camera are stored. And again, this is subject of discussion for understanding digital camera properly. In this effort this discussion reveals intricate but overlying to provide a brief overview to readers regarding file formats of digital cameras.

Basically, strictly considering facts, there are three file formats used by digital cameras to create images of photographs taken by them. These are JPEG, TIFF and RAW. These are names of formats but like their strange names their identity remains in dark if these are not conversed in a little detail. The most vastly and commonly used file format for digital cameras is JPEG file format. It is time and again lone available file format on primary and some intermediate standard digital cameras. Many sophisticated digital cameras allows users to opt for between JPEG, TIFF and RAW. However professional photographers usually prefer to shoot RAW. Yet discretion remains with human preference only.

The digital camera is but a technological advancement of conventional analog camera. And thus every component of analog camera must have been upgraded or changed to bring in some improvisations. This discussion is an effort to unravel alteration and make one comparison between what was and what is! This discussion is thereby focused upon a very critical component of a camera (analog as well as digital), zoom!

Before making a comparison it is important to discuss significance of subject matter, in this case zoom. Well a zoom lens has more than a few portable glass components inside it. By adjusting these components, focal length of lens can be altered. Modifying focal length alters view distance as well as reduces field of view, thereby making projected image to appear larger.

It must me noted that both optical zoom and digital zoom are components that are used to magnify an image, but they work in fundamentally different principles and acquiesces drastically different results. In general, optical zooms always produce a far finer and advanced image than digital zoom.