From some unexplained reason when you take an image and create several copies of it with different exposures and try to combine it in Lightroom CC HDR feature it doesn’t work. That is the reason why Morganti is showing us how to do this using photomatix. Inside the software Morganti explains each step until you end up with the finished HDR.
We have already looked at creating a pseudo HDR image using a single image in Lightroom on photographer Gavin Hoey video. If you are interested in HDR in general we have a huge section dealing with this technique.