Photoshop Tip: Quick duplicates
Tips & Tutorials, by Mark White
December 28, 2012
The fastest way to duplicate an object in Photoshop…
Duplicate objects in a photo by selecting them with the Quick Selection tool and pressing Cmd/Ctrl+J.
This places the object on its own layer. which can be moved and repositioned using the Free Transform tools (Cmd/Ctrl+T for its shortcut).