Digital Graphics File Formats

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Raster Graphics

• a raster graphic is a graphic or image that is made up of small pixels or point of colour this means that it can be stored in a variety of different ways but when enlarging will become pixelated and lose its detail.

Vector Graphics

• vector graphics work differently from raster graphics this is because they work in lines or paths as they are sometimes called this allows enlarging with ought having the problem of pixillation tis type of graphic is mainly used of rethinks like billboards where pictures need to be blown up so they can fit the billboard.

Raster Graphics

JPEGStands For joint photographic experts group

Used For/Example storing images on the web swell as in digital cameras

Advantage small file easy to download and see online

Disadvantage poor image quality when enlarged

TIFFStands For Tagged Image File Forma

Used For/Example special occasions or fine art images.

Advantage better image quality than a jpeg.good for editing

Disadvantage very large file sizepixilation when enlarged as it is a raster graphics file format.

GIFStands For graphic interchange format

Used For/Example due to its wide availability it is mainly used on the internet.

Advantage easy to storecan be animatedgood for images with limited colour

Disadvantage large file size enlarging creates pixilationnot good for photographs

BMPStands For Bitmap graphics

Used For/Example photographsgraphics with wide ranges of colours

Advantage these files may be easily createdgood photo quality

Disadvantage limited to rgb imagesnot detailed when compressed or expandednoy supported well on multiple platforms

Vector Graphics

PSDStands For photoshop document

Used For/Example photoshop

Advantage can edit in photoshopgood quality even when enlarging

Disadvantage can only open in photoshop

AIStands For Adobe Illustrator

Used For/Example logo creation

Advantage good quality even when enlarged

Disadvantage big file size

FLAStands For Flash File

Used For/Example animation and games

Advantage good quality files with small size for easy downloadcan include sound and video

Disadvantage limited in why it can do.

WMFStands For Windows metafile

Used For/Example logosbillboards

Advantage can be expanded to huge image with ought loosing detailcan contain both bitmap and vector components

Disadvantage big files meaning slow download from internet.

File Format Capture and Optimising

CompressionDefinition compress an image or make an image

smaller in size

Advantage easy to redownload as small file

Disadvantage upon re sizing the image will become pixelated and loose its detail

Image CaptureMethod Scanner

scanners are used to scan 3d object into a computer creating a 2d image of the

object

Method Camera

cameras are used by both public and professionals alike to capture images as

the photographer sees it.

Method Graphics Tablet

a graphics tablet is a tablet in which you can draw on and use like a pen and paper.

OptimisingWhy would you optimise? to make sure that images are easy to view

on the web

How can you optimise? the most used way of optimising is by using photoshop and “image size”

Advantage to optimising makes optimised images very easy to download of the internet

Disadvantage to optimising when downloaded the image will be much smaller or in less detail than it was when it was taken