THE THEORY & CONCEPTS Lesson 1 – Part 1

What is Graphic Design It’s a CREATIVE PROCESS Undertaken in order to convey a specific message/s I can’t teach you to be Creative but I can give you some tips of the various Processes involved. What comes to your mind? 2

Image file formats (some of them) There are two types: – Raster (pixels) – Vector (lines) There are also two types of compressions: – Lossless – Lossy 3

Raster Formats (1) JPEG (Joint Photographic Experts Group) – Lossy compression – Extention is.jpeg or.jpg – JPEG files suffer degredation when repeatedly edited and saved – Does not support Transperancy 4

Raster Formats (2) PNG (Portable Network Graphics) – The successor of GIF (256 colours dohh) – Lossy or Lossless formats – Supports gamma and chromaticity data (transperancy) TIFF (Tagged Image File Format) – Can be Lossy or Lossless (we usually tend to use it cos the Lossless version is very good and relatively decent filesize) 5

Raster Formats (3) BMP (very large file size since it saves itself as uncompressed) JPEG 2000 GIF PSD (Photoshop) 6

Vector Formats As opposed to raster formats, vector formats contain a geometric description At some point all vector graphics must be rasterized to be displayed or printed AI EPS (Encapsulated PostScript) PDF 7

What Resolution? Size? Pixels? 8

What Colour Model? CMYK or RGB? Is it for the screen or for print? CMYK (subtractive) colour model is used for the printing process and refers to the four inks used – Cyan, Magenta, Yellow and Key 9

What Colour Model? (2) RGB (additive) colour model colour model used to display images on an electronic system – Red, Green, Blue. 10

Demo 11