Lecture 1: Intro to Photoshop

Urdu/Hindi Version

Intro to Photoshop in Urdu, Hindi by crazytutor

What is a Pixel?

Pixel is the unit of graphics.

One pixel is a box on screen.

For Example: A screen with width 800 pixels and height 600 pixels results in 480000 pixels/box on it; those 480000 pixels are also referred as Screen resolution.

How many types of graphics are there?

There are two types of graphics:

Roaster Graphics: Roaster graphics are resolution dependent, it uses pixel as a unit. So, if want to increase the size of an image we have to increase its pixels too. e.g. Bitmap(paint), Photoshop.

Vector Graphics: Vector graphics are made of mathematical calculations that form image; they do not use pixels therefore they are resolution-independent. e.g. Microsoft express studio.

If we stretch an object in paint it does not changes its pixels and results in a low quality object. But, if we stretch the same object in vector graphics software, it maintains the quality and the image remains unaffected; that’s because it calculates the increase in image width & height and thus, increases the amount of pixels in proportion.

Understanding the User Interface of Photoshop:

Menu Bar: All of the options are embedded in this menu.

Tool Box: It contains the tools available in Photoshop.

Caption buttons: Minimize; Maximize and close.

Property bar: Contains properties of selected tool.

Panel:  Contains Layers info, Adjustment & color info, History etc.

Photoshop Tools Reference:

Marquee (Selection) Tool: Contains rectangular, eclipse, single row and single column marquee tools.
Shortcut: M;   Remove Selection: Ctrl+d

Move Tool: Used for moving the current selection.

Shortcut: V