In article .com,
Savageduck says...
I used my XF16mm f/1.4 set at f/2 @ ISO 200. Distance was about 12?. I used
a Godox TT350F flash. I took a focus bracket of 20 exposures with an interval
of 3 second to ensure the flash was functional for each exposure.

The 20 shots were imported into Lightroom CCC, and then opened as layers in
Photoshop CC. The layers were auto aligned, and then auto blended, and saved
back to LR to get this result.

https://adobe.ly/2HPFNXH

Looks good. I tried focus stacking when Olympus updated the firmware of
the E-M1 II to allow it with the 12-100 and did this test:
https://myolympus.org/document.php?id=20179
--
Alfred Molon

Olympus E-series DSLRs and micro 4/3 forum at
https://tech.groups.yahoo.com/group/MyOlympus/
https://myolympus.org/ photo sharing site