This solution lack image alignment which is an important part of HDR merge. Doing alignment by hand is a no-go for me.If you have "Pixelmator Pro" I have written some applescript that can perform an HDR merge with it. See the following link. It uses the Pixelmator Pro Applescript actions support:
https://www.etsy.com/listing/1673781560 ... cket-merge
Note this does NOT work with Photomator, so you are going to have to buy Pixelmator Pro if you want to try this out.
Statistics: Posted by Martin Chalifoux — 27 minutes ago