Chapter 1: Introduction to adobe photoshop

WORDS/DEFINITION	MEANING/EXAMPLES
Files format for photoshop	-PSD (photoshop document ) -PDF (portable document format) -PSB (large photoshop format ) -TIFF (tagged interchange file format )
Files photoshop can open	-GIF & JPG -TIFF -PDF -PSD
Zooming in	-ctrl + ( +/- ) -alt + mousewheel -ctrl + spacebar (move mouse to zoom in and out ) -slider in navigation pallete -pinch the touchpad ( laptop )
Pixels	-a pixel ( picture element ) is a tiny rectangle that containts information about the colour at a particular location in an image -each pixel = specific colour
Pixel sizes	-1 bit = 2 color -4 bits  = 16 colors -8 bits  = 256 colors -16 bits = 65,536 colors -24 bits = over 16 millions colors
Image resolution	-the number of pixels that make up each printed include image -higher resolution = better detail ( also bigger file size) -300 pixels per inch = printing -72 pixels per inch = screen display -
Dpi	-dots per ink -1200dpi x 1200(multiply itself) / 300ppi x 300ppi
On screen size	-depends only on number of pixels that makes up the image
Print size	-depends on number of pixels as well as on the print resolution -higher res = print smaller image -lower res = print bigger image
How to convert on-screen size into printed size	On-screen size / resolution = printed width