a powerpoint on various file types.

1. Digital Graphics
File Formats
Nick Aldous

2. Raster Graphics
• Give a definition of Raster Graphic
A Raster Graphic is an image format that is
made up of Bitmaps. Bitmaps are pixels
(individual blocks of colour) that when put
together can make up an image.

3. Vector Graphics
• Give a definition of Vector Graphics
A vector Graphic is an image that is made up of
vectors. These vectors can be paths and strokes
that include start and end points that can be
curved or straight.

4. Raster Graphics

5. JPEG
Stands For Joint Photographic experts group
Used For/Example Photographs, websites, advertisements,
posters.
Advantage Very small file size and extremely
compatible with almost everything
Disadvantage If you edit a JPEG multiple times it will lose
its quality due to the compression.

6. TIFF
Stands For Tagged Images File Format
Used For/Example Desktop Publishing which is popular with
graphic designers
Advantage Documents saved as TIFFs can save
multipage documents (e.g. powerpoints)
to a single TIFF file.
Disadvantage Many devices will not be able to load a
TIFF file

7. GIF
Stands For Graphic Interchange Format
Used For/Example It is used for short digital animations that
use lots of pictures to create the illusion of
a short video. Very similar to a flipbook.
Advantage They are very good for blogging and social
media as it shows a short film that is
usually displayed as an image.
Disadvantage You have to keep them very simple as the
more colours and changes contribute to
the file size.

8. BMP
Stands For Bitmap Image File
Used For/Example BMPs can be used to store digital images,
works very well with JPEG’s.
Advantage There is no loss in compression
Disadvantage BMP’s have a large file size

9. Vector Graphics

10. PSD
Stands For Photoshop Document
Used For/Example Photoshop Documents are used for image
manipulation.
Advantage Saves layers, page formatting information
etc
Disadvantage Web browsers can not read a PSD file
format.

11. AI
Stands For Adobe Illustrator Art
Used For/Example Creating Logos.
Advantage They can be scaled to any desired size
without loss in definition
Disadvantage They are very complicated.

12. FLA
Stands For Flash File
Used For/Example Used to create Animaton and Games
Advantage You can produce high quality files with a
small file size which can include sound and
video
Disadvantage FLA lets you have as many objects on one
layer as you want. But SWF has a limitation
of one object only. So when converting
SWF into FLA objects will be placed into
separate layer.

13. WMF
Stands For Windows Metafile
Used For/Example Very similar to Al files they are used for
Logos.
Advantage They can be scaled to any desired size as
vectors with no definition loss.
Can support both vectors and bitmaps
Disadvantage A disadvantage for WMF couldn’t be
found.

14. File Format Capture
and Optimising

15. Compression
Definition Lossy compression is the way in which file
sizes are reduced by reducing the amount
of information that is saved.
Advantage Lossy compression results in a closer
representation of the original image.
Disadvantage Images become more pixelated as they are
compressed.

16. Image Capture
Method Scanner
How is it used for image capture of
graphics
A scanner is used to take pictures from
paper (book, newspapers) and put them
onto the computer.
Method Camera
How is it used for image capture of
graphics
A camera is used to take pictures.
Method Graphics Tablet
How is it used for image capture of
graphics
A graphics tablet is used to create images
using strokes, colours and shapes.

17. Optimising
Why would you optimise? To ensure easy easy viewing if on the
web.
How can you optimise? Images can be optimised by..
Reducing image size.
The amount of pixels within the images.
Advantage to optimising
Disadvantage to optimising It reduces the resolution.