Hi he is into photography and seen this thing from the states called stack shot
http://www.cognisys-inc.com/stackshot/stackshot.php
He uses mine and his dads cameras he saw some shots of spiders up close and being a doctor who fan he was hooked
I have made the foucusing track with a sensor( micro switch) for home position but stuck on the control bit.
Been out of work and on sick for 2 years so no way can I afford the unit from USA what do you think
Al