Our second remit was to produce a set of pictures identical except each one was to be taken using a different focal length. This was more difficult and really needed the use of a tripod and use of manual control of the camera. These pictures were taken without a tripod and using the automatic features of the camera. However, we managed to combine the pictures in such a way that all parts of the result are in focus.
Bottom focus Mid
focus

Top focus Combined
"Focus stacked" picture. SD