1. By Dan Hans
UNIT 54
DIGITAL GRAPHICS FOR PRINT

2. Introduction
 This PowerPoint will be about the different
types of graphic files and formats, these are:
 Raster files
 Vector files
 Metafiles
 File extensions

3. Raster files
 Raster files are digital images that use pixels, this means the image is made
up of lots of tiny little squares that each have their own colour.
 If you were to zoom into a raster image, it would become distorted and
illegible, allowing you to view the little squares.
 You can edit raster files with computer software such as painter, Photoshop
MS paint and GIMP.
 Raster file are more likely to be photos rather than computer graphic
designed images.
 Coloursare constructed by adding the values of red green and blue.
 An advantage of Raster files is that you can use photos and manipulate
them in raster editors such as Photoshop.

4. Raster Files
 I have used raster files whilst making my mixmag front cover.
 The main image on the front cover is a Raster file and I edited it on Photoshop as it is
an advanced raster graphic editor and allows me to manipulate raster files.
 When I changed the colour of the onesie there were some pixels which didn’t change
so I had to zoom in and change the squares individually.
This was originally brown.

5. Vector Files
 Vector graphics are based on mathematical expressions that use lines, curves, shapes
or polygons to represent images in computer graphics.
 Each Vector editing software has its own file format, however EPS and SVG are the
primary vector formats for exchange. EPS is more commonly used in printing, while
SVG was designed for Web use.
 Vector graphics are unlike raster graphics appear smooth at the edges no matter how
they are sized, whereas raster graphics appear jagged, or pixilated, when up-scaled.
 The disadvantage of a Vector graphic is that if scaled down to much then parts of it
like lines will disappear.

6. Vector Files
 Here is an example of a Vector graphic that I used in my mixmag
cover.
 I used this because it was easier to re-size without it going pixilated
as it is smooth.
 I created it on Adobe Illustrator and then saved it as a .EPS file
extension.

7. Metafiles
 Metafiles are a type file that can contain both Vector and Raster
graphics.
 Windows Metafiles are intended to be portable between
applications and may contain both vector graphics and Raster
components.
 A file format and extension of a metafile is windows metafile (.WMF)
 The advantages of a Metafile are that you can combine both raster
and vector graphics into the one document making your final
product much better that just using one or the other.
 The disadvantages of Metafiles is that if they are not exported
correctly they can become corrupt and you lose it.

8. How i created a Metafile
To create a metafile
I first had to make a
vector graphic in
adobe illustrator
I then dragged it
into photoshop
Finally I saved the
document as a
.WMFwhich is a suitable
metafile format

9. File Extensions
 File extensions are the format that a file is being saved as.
 This depends on the different software you are using
 If you were using word you would save your document as .Doc or
.Docx
 In terms of graphics the common file extension of a Raster file is
.JPEG or .BITMAP
The common file extension for a Vector graphic would be .EPS
 These are the types of file extensions I used when making my
mixmag magazine. Also I used .PSD .IID

10. Examples of file extensions I used
I used this file extension so I could put my VIP
pages into a different format than InDesign so I
could print it off.
This is .PSD which is the standard Photoshop
file extension. I used this for my front cover to
manipulate my images.
This is .WMFwhich is a file extension for a Metafile
format, this was so I could have both vector
graphics and raster in the same document. I used
this so my cover could contain raster and vector.
And finally this is .JPG which is the file
extension for a JPEG image which is a raster
file. I used this file extension when using
images for my front cover and VIP page.