Chapter 4 & 5

 

This Image Edited Using Lasso Tool & Opacity Option*

Selections are used to specify areas of editing within an image, such as color changes or replacing a sky

Option Bar Settings

:  The Options bar contains options for changing

    Selection behavior

    Feathering

    Aliasing

:The Lasso tools include

                    Polygonal Lasso tool creates straight sided selections around objects by clicking the objects edges

                    Magnetic Lasso tool tracks the edges of an objects based on shifts in color or tone

                    Lasso tool creates selections based on freehand tracing

Select > Save Selection to save a selection

Selections are saved as Alpha Channels

:Channels also contain specific image data

Black and White images contain one color channel

An RGB image contains 4 color channels

A CMYK image contains 5 color channels

:This image edited using rectangular marquee tool