I guess most of us know how powerful is Illustrator in terms of transforming, repeating transformation and blending objects with predefined values - It’s not a news right! Since Illustrator is drawing software of course it is. Despite Photoshop is painting software it has kind of flexibility in terms of objects, transformation and repeating transformation.
1. Ctrl + T is the shortcut for free transform. If you press ctrl + alt + T Photoshop automatically create a copy of the object and make it ready to be transformed.
2. If you move or transform an object and then with some object selected press shift + T - last transformation values that you’ve applied will be apply again.
3. If you do the same as point 2 but press shift+ alt + ctrl + T instead the result will be combination of point 1 and point 2 - transformation with last values with a copy of selected object.