BIT1323 Multimedia Authoring 2017: Chapter 1 - A Quick Tour of Adobe Photoshop

File Formats

Photoshop Document (PSD) - The Native Photoshop Format
Graphic Interchange Format (GIF) and Joint Picture Expert Group (JPG/JPEG) - Used for Web Graphics
Tag Image File Format (TIFF) - Best file format for printing
RAW Image - Large Unprocessed Images taken by DSLR Camera's

File Formats that preserves Photoshop Layers

Photoshop Document (PSD) - The Native (default) Photoshop Format
PSB (Large Document Format) - Able to store larger Photoshop files (up to 300,000 x 300,000 pixels)
Portable Document Format (PDF) - Captures all the elements of the documents while being smaller in size, Good for digitally sending to other people.
Tagged Image File Format (TIFF) - Best Format for Printing

Navigating a Photoshop Image (Zooming In and Zooming Out)

Using the Zoom Tool - Press 'Z' to access the Zoom Tool, or click the magnifying glass icon on the toolbar.
Type in a magnification value on the bottom left of the screen,

Open the 'View' menu tab, and on the drop-down menu click 'Zoom In' or 'Zoom Out'. As in the menu, The 'Zoom In' and 'Zoom Out' with shortcut 'Ctrl+ +'(Ctrl plus +) or 'Ctrl+ -' (Ctrl plus -).
Another way to navigate in Photoshop is to use the Navigator, To access the Navigator,

What is a Pixel ?

A pixel (picture x element) is the smallest addressable element in a display device, The smallest contrallable element of a picture represented on a screen. Each pixel is made up of Sub-Pixel each controlling the intensity of a colour, The image below shows the RGB sub pixel format.