I recently started a thread at Fred Miranda about the new Sony bracket app that I found lacking. Glad I did because that's where I learned about a web site that has other independent apps for Sony cameras, including a focus bracket app that allows for far more than 3 shots. It isn't perfect - some camera freezes when trying the maximum number of shots allowed, but could still be a huge time saver for many applications.

 

This shot was done in my backyard: A7rII, 70-200mm f4 at 79mm, f8, 1/30, 10 shots, stacked in PS.

I found the stacking app as well. It works ok for me. I am considering the Sony fe 90mm macro lens, and I think I found the perfect excuse to buy it. My current macro lens is manual and for the app you need auto focus. 

Thanks for this info, just what I've been looking for. This is fun to experiment with, and all seems to be working fine on my A7II.  Question: I don't have Photoshop CC and probably won't do enough stacking to warrant an expensive program for this feature. Can someone recommend a free or low-cost stacker program?  How about LR Enfuse?  I'm using LR6 and a Windows 10 PC.

CombineZP is pretty good.

Anyone know if it’s work with sigma mc 11 & sigma 105 macro???

If your camera has Bluetooth, Alpha Focus Bracketing is a professional and reliable solution