In this video, I show my setup for taking focus-stacked images with microscope objectives. I use a Lumix GH1, which is a micro 4/3 format camera, and a custom adapter that lets me interface the camera to a microscope body or directly to a microscope objective.
Video-rate focus stacking with a liquid lens:
CombineZM software for focus stacking:
Using Photoshop for focus stacking: