2. Raster Graphics
Raster graphics is one of two main files for shrinking, enlarging and saving an image e.g. Through a form of
software or using a scanner. Raster graphics is made up of Bitmaps which is multiple pixels put together
making up an image.
A raster file is usually larger than a vector graphics image file. A raster file is usually difficult to alter without loss
of information, although there are software tools that can convert a raster file into a vector file for refinement
and changes. Examples of raster image file types are: BMP, TIFF, GIF, and JPEG files.
BMP – Bitmap image file
TIFF – Tagged Image File Format
GIF – Graphics Interchange Format
JPEG – Joint Photographic Experts Group
3. Vector Graphics
Vector graphics is one of two main files for shrinking, enlarging and saving an image e.g. Through a form of
software or using a scanner. Vector is also known as paths and strokes defined by start and end points.
There are a few pros and cons to Vector Graphics these include:
Changing the size of paths – pro
No loss in definition – pro
Can be very big files – con
Perfect for company logos, business cards and/or on billboards – pro
Examples of Vector image file types are: AL, FLA and WMP files.
AL – Adobe Illustrator file
FLA – Flash file
WMP – Windows Meta file
5. JPEG
Stands For Joint Photographic Expert Group
Used For/Example Photographs, web formats and
photographs on the internet are in this
form.
Advantage Some of the advantages could include:
-Everyone being able to view this type of
file.
- This file can be viewed on and
technology devise e.g. Phone, computer,
IPad etc..
Disadvantage Some of the disadvantages could be:
-It looses quality every time it is edited
due to compression and recompression.
- The pixels could be large and make the
image blurry.
6. TIFF
Stands For Tagged Image File Format
Used For/Example Desktop publishing – popular with graphic
designers.
Advantage Some of the advantages could include:
-Being a multiple-page document
- Doesn’t loose quality due to compression
Disadvantage Some of the disadvantages could include:
-Doesn’t open on many technology
devises
- Not many people can view this.
7. GIF
Stands For Graphics Interchange Format
Used For/Example Short digital animations usually used on
the internet, a series of images on a loop
made to look like a video
Advantage Some of the advantages could include:
-Small files as it’s just some images put
together
- Viewed quick and easily
Disadvantage Some of the disadvantages could include:
- The quality is quite bad
8. BMP
Stands For Bitmap Image File
Used For/Example It’s similar to a JPEG image therefore used
on web formats, the internet and
photographs
Advantage Some of the advantages could include:
-No loss due to compression
Disadvantage Some of the disadvantages could include:
- Has a large file size
10. PSD
Stands For Photoshop Document
Used For/Example Image manipulation, front cover of a
magazine
Advantage Some of the advantages could include:
-Saves layers, page formatting information,
swatches etc..
- Supports transparency e.g. Text.
Disadvantage Some of the disadvantages could include:
-Not universal, not everyone can see it
- File sizes can be really big
11. AI
Stands For Adobe Illustrator Art
Used For/Example Logo creation
Advantage Some of the advantages could include:
-Can be scaled big and small
- No loss in definition
Disadvantage Some of the disadvantages could include:
- Some of the file sizes can be big
12. FLA
Stands For Flash File
Used For/Example Creating animation on games
Advantage Some of the advantages could include:
-Can produce high quality files with a small
file size
- Can include sound and video
Disadvantage Some of the disadvantages could include:
-Flash installation is quite complex
- The application Flash would need to be
on a technology device to view the files.
13. WMF
Stands For Windows Metafile
Used For/Example Crating logos
Advantage Some of the advantages could include:
-Can be scaled big and small
- Can contain both vector and bitmap
components
Disadvantage Not too sure of any disadvantages.
15. Compression
Definition Lossy compression is the way in which file
sizes are reduced by reducing the amount
of information that is saved
Advantage The advantage here is
File sizes can be reduced if the file is too
big.
Disadvantage The disadvantage here is
Images become more pixelated as they are
compressed as they save smaller amounts
of compressed files
16. Image Capture
Method Scanner
How is it used for image capture of
graphics
Scanning photographs for printing, for web
pages, for Windows wallpaper, for
emailing images to friends and relatives,
images for newsletters or notebooks, for
PowerPoint slides shown at meetings, etc,
etc. And since these photos are now
digitized, you can use editing software to
combine images, create special effects,
etc. This is an endless artistic field.
Method Camera
How is it used for image capture of
graphics
Cameras create/take 3 dimensional digital
images. Digital Cameras like scanners are
capable of image capture, except a digital
camera is more transportable making
them the preferable choice, this is also
down to the fact that a digital camera is
able to capture images of everyday life
compared to the Scanner which requires
invariably a flat document
17. Image Capture
Method Graphics Tablet
How is it used for image capture of
graphics
A graphics tablet or digitizer is a
computer input device that enables a user
to hand-draw images, animations and
graphics, similar to the way a person draws
images with a pencil and paper. These
tablets may also be used to capture data
or handwritten signatures. It can also be
used to trace an image from a piece of
paper which is taped or otherwise secured
to the surface. Capturing data in this way,
by tracing or entering the corners of linear
poly-lines or shapes, is called digitizing
18. Optimising
Why would you optimise? To ensure easy viewing of images that can
be uploaded to the internet
How can you optimise? Photoshop has a tool that is able to
optimise images.
They can be optimised by reducing image
size, reducing bit depth, reducing
resolution and compressing images.
Advantage to optimising Images that have been optimised have a
smaller file type meaning a faster
download time.
Disadvantage to optimising Optimising can be done by reducing bit
depth, Bit depth refers to the amount of
“bits” used regarding the colour of
individual pixels there fore the image can
become pixelated and look unpleasing.
