Introduction

INTRODUCTION
In today's world of high technology, mobile computing has become the most omnipresent medium for so many different applications. From the simple downloading of the mp3s of the youth to downloading business application/software of the professionals, or from simply carrying out transactions to videoconferencing by the career people to simply having fun with a number of social networking sites, it is simply a part of the lives of the majority using any internet-connected computers or mobile handsets.

Wednesday, 25 March 2015

Chapter 1 : A Quick Tour of Adobe Photoshop


 Opening and Saving Images


 How to open and save image
 ~To open: File => Open

 ~To save: File => Save


  File Formats
  ~preserve layers 

File formatUses
PSD (Photoshop Document)Used for Photoshop document
PDF (Portable Document Format)Used for portable document
PSB(Large document format)Used for large document
TIFF(Tagged image file format)Used for Printing

~does not preserve layers 

File FormatUses
GIF , JPGWeb Graphics
RAWFor Digital cameras

Pixel
Physical point in a raster image, or the smallest addressable element in an all points addressable display device.
*   1 bit = 2 colours
*   4 bits = 16 colours
*   8 bits = 256 colours
*   16 bits = 65,536 colours
*    24 bits = over 16 million colours

Relationship between resolution, on screen size and print size 
 
on screen size / resolution = printed width

resolution = 300 pixels per inch for printing
                 = 72 pixels per inch for display                                        





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