Why Is there a Need to Have Different Types of Formats for the Same?

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Why is there a need to have different types of formats for the same type of file (for example, a document can have a doc/PDF format, a music file can have an mp3/wav format)?

T are different ways of storing the information in a photograph or a drawing. Ultimately image files are all made up of data bits stored in computer memory or on hard drives, but for different formats the bits are encoded differently. We use extenders (a period followed by three letters) in their filenames so we can easily recognize them. So piano.jpg is a jpg and horse.bmp is a bmp image. Formats such as bmp, raw, png and tiff are known as "bitmap" images. T store the individual colored dots (pixels) of a photograph or drawing. T can assign one of up to 16.7 million different colors and shades to each pixel, so t reproduce photos the most accurately. .jpg and .gif formats are similar, but compromise on color accuracy and reproducibility in order to shrink the size of their image files. Some formats (eg. png, tiff, bmp and gif) can store transparent areas along with the visible pixels. While a gif simply makes a chosen color transparent, the other formats offer 256 levels of transparency. That allows much more realism when one picture is superimposed over another. When you load transparency formats as layers in a photo editing app, the layers beneath them show to various degrees through the transparent areas depending on the transparency levels. A major issue with bitmap formats is that when enlarged enough, their pixels can become visible. The result is usually a blocky look with jagged edges. So it is always important to start with a scan or photo of high enough detail, and avoid enlarging it during editing. Formats such as psd and psb (both named from Photoshop's initials) can store not just a single image, but many image layers in a single file. This is necessary because during photo editing you want to be able to store and retrieve the individual layers on different occasions until the project is complete. Another major class of image formats (ai, eps) are called "vector" images. T are not based on pixels but on shapes. Type Into Pdf Illustrator is the most widely used vector editor. This type of format primarily stores colored shapes enclosed by curved or straight lines. Text can also be reproduced the same way. Clip art, including logos, can be drawn more precisely with this technique. And vector images can be enlarged as much as necessary without showing any blockiness or jagged edges.

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But vector images work best with vector tools that allow a precise and precise drawing process. You can use Photoshop's built-in vector tools to produce beautiful drawings in vector format. For example, drawing a flower, using tools such as Path Fill and Pen Tool, results in a drawing that's perfect for vector art applications.