I am looking for a script for focus stacking with Raynox DCR 250. There is already default script there but it is linear and that is better suited to stock lenses and, with the Raynox 250 attached, I think it needs to exponential focus. Can anyone help me find such script or may be some setting with that default stacking script? I am using a Canon SX40.
I don't think you need to use a special "script". There are some softwares that do the trick and are easy to use.
If by any chance you're using photoshop, this guide will help you:
I was using it to stack 20 photos and it works great for me.