Chapter 3
Quick Selection Tool
Add (+) or subtract (-) areas of the selection until you have the area you want
Fine-Tune the Selection Area by Repositioning the Marquee While Creating It
Keyboard + Mouse-Click combinations are important
Freehand Selections
Lasso Tool, Polygonal Lasso Tool, Magnetic Lasso Tool
Fine-Tune the Selection Area by Repositioning the Marquee While Creating It
Ovals and circles are tricky
Which of Photoshop's Copy/Paste commands pastes clipboard content at the location it had in the original image instead of at the center of the document?
Paste in Place
Once you have made a selection, any changes you make apply exclusively to
The pixels within the selection
Moving a selected area
The rest of the image is not affected
The Move Tool
if you are working with a document that has only one layer, the piels you move will replace the pixels beneath them.
Making an oval selection
Elliptical Marquee Tool
Elliptical Marquee Tool
Select the Shape (click-n-drag)
Lasso Tool
freehand trace an area
The best selection tool for a specific area depends on characteristics of the area
(i.e. shape, color and size)
Quick-Select Tool>OPTIONS>AUTO ENHANCE
Auto-Enhance - Option that creates better quality selection with edges truer to the object
When resizing a selection, how do you constrain the image proportions to avoid distortion?
By adjusting the bounding box handles while pressing the Shift Key.
Manipulating Selections
Duplicate a selection
There are four primary types of selections. Which group allows you to make selections based on finding and/or following defined edges?
Edge-Based Selections
How do you rotate a selection?
Edit>Transform>Rotate
Four primary types of selections:
Geometric, Freehand , Edge-based and Color Based
Fine-Tune the Selection Area by Repositioning the Marquee While Creating It
Helpful techniques to make selecting easier
Elliptical Marquee Tool
Hold down Spacebar and drag the selection to move it (this allows you to position the selection more precisely if you weren't exactly in the right location when you started the "click-and-drag")
How does "Feathering" soften the hard edges of a selection?
It blurs the edges by building a transition boundary between the selection and the surrounding pixels, but it may cause some loss of details at the edges.
Color Based Selections
Magic Wand Tool
Which tool allows you to select an image area based on color similarity?
Magic Wand Tool
Which keyboard + mouse-click combination is helpful when making elliptical selections by allowing you to precisely position the selection area while you are creating it?
Mouse + Spacebar
Manipulating Selections
Move a selection
The Move Tool
Move he selected area to another part of the composition (or to another file)
Fine-Tune the Selection Area by Repositioning the Marquee While Creating It
Not always obvious where to start the "CLICK-AND-DRAG"
Moving a selected area
Once you've made a selection, any changes apply exclusively to the pixels within the selection
Quick Selection Tool
Point an area of an image and the tool automatically finds the edges
Edge-Based Selections
Quick-Selection Tool
Geometric Selections
Rectangular Marquee Tool - area Elliptical Marquee Tool - area Single Row Marquee Tool - one pixel line Single Column Marquee Tool - one pixel line
Elliptical Marquee Tool
Release the spacebar (But Not the Mouse) and continue to create the selection, Repeat process as needed until the shape/position of the selection are correct
Manipulating Selections
Reposition as you create a selection
Let's say you have selected an area in your image, by using one of the selection tools. If you click on the "Move Tool" and also press the Option Key, the icon changes to a "double arrow."
The "double arrow indicates that a duplicate will be made when you move the selection.
Moving Selected Pixels with Keyboard Shortcuts
The Pointer icon now has a pair of "scissors" (this indicates the selection will be cut from the current location once it is moved)
Quick Selection Tool
This tool is one of the easiest ways to make a selection
The Move Tool
Unless a section tool is active, click elsewhere will not deselect the active area
Making changes to an area within an image in Photoshop is a 2-step process
Use one of the selection tools to select the part of an image you want to change
Moving Selected Pixels with Keyboard Shortcuts
While the Elliptical Marquee Tool is selected and the Selection is active, press control/command key.
Elliptical Marquee Tool
area
Rectangular Marquee Tool
area
Magnetic Lasso Tool
combination of Lasso/Polygonal and is best used with area that have a good amount of contrast
Auto-Enhance
is slower, but the results are better
Single Column Marquee Tool
one pixel line
Single Row Marquee Tool
one pixel line
Edged Based Selections > Quick Selection Tool
paints by automatically finding/following defined edges
Color Based Selections>Magic Wand Tool
selects an image area based on color similarity
Polygonal Lasso Tool
sets anchor points in straight line segments
