Last week after a lot of rain our river was in flood. I went there to do some long exposure shots. A 6s shot was too over-exposed, there was no detail in the water in the foreground. I had also taken a 1/20s shot without moving the tripod, which had lots of detail. So I tried merging them with the hdr function in Lightroom. That didn't work, so I tried HDR FX Pro, and this is the result.