AFFINITY PHOTO: GET TACK SHARP CLOSE-UP SHOTS WITH FOCUS STACKING - YouTube
GSimpleRelease Review – A Focus Bracketing App for Panasonic Lumix Cameras
Practicing Some Focus Stacking Techniques, Part III | ThruMyLens
Amazon.com: CamFi 3 Plus DSLR Wireless Camera Remote Controller, WiFi and 4G High Speed Capture and Transmit Aperture, Shutter, ISO, Live View,Focus Stacking, Support CP1 LR : Electronics
Here's a Cool Photo Tip Friday on what Focus Stacking is (and a really helpful tutorial) - Scott Kelby's Photoshop Insider