Camera Deformer
With this deformer and a grid placed on a camera view, objects can be deformed. This is particularly useful if you want to make deformations that are immobile with regard to the camera view. Think, for example, of a smearing tool that deforms the object volume instead of a pixel surface.
For example, you can stretch objects when you get close to the edges of the image. The Camera Deformer points can be influenced with the help of Pose Morph. Another purpose of the deformer would be to quickly and easily compress and stretch one or more objects.
To use the Camera Deformer, simply create it and assign it to the object to be deformed. To influence several objects at the same time, place the deformer together with the objects under a Null object in the same hierarchy level. Then select the deformer and switch to Point Mode to edit deformer points (including immediate object deformation).


Example
The Camera dDformer is also very suitable for giving sterile, too-perfect clone collections an organic look by hand: