Using the magnetic lasso in the PS-cutout

1. How does Photoshop Drag a picture in a cutout?
Press the SPACEBAR, the hand appears, press the left mouse button to drag the picture. Release the space bar to restore the lasso state to continue to pull the map.

2. How to back up after the wrong selection of magnetic lasso
Press the DELETE key to return one step at a time to select the point.

3. How to adjust the adsorption force of the magnetic lasso (the sensitivity to the edge of the image)
Adjust the contrast. The parameter bar specifies the sensitivity of the magnetic lasso tool to the edge of the image. Shortcuts "<" and ">" (Commas and periods on the keyboard)
The contrast can be adjusted when the color difference between the edge and the background color is large. The color of the edge and background color is less than an hour, the contrast should be adjusted smaller.

4. Other parameters of magnetic lasso
Width detects an image within a specified distance from the pointer. You can use the shortcut keys [and] keys to resize the width during the pull up process
Frequency locates the frequency of creation, the higher the number, the more key points are marked. shortcut keys; and ' (that is, semicolons and single quotes on the keyboard)
"Feather" slightly
Anti-aliasing selection can effectively go to the team jagged edges