How does ps scale the objects in the picture?
1. First, click "Open" in the upper left corner of the picture you want.
2. Then use the "Select Tool" in the left toolbar.
3. You can also use lasso tool.
4. Use them to select the object to scale.
5. After selection, click Edit and select Free Transform.
6. Finally, drag the contacts around the picture to scale the objects in the picture.