A pair of Common Blue Damseflies were doing their thing, and were then disturbed by a second male (R5+200-800, f/14). (The 200-800mm is not my 1st choice but at the moment I can't get closer than 3 or 4m anyway and it's better than any of my other lenses for that distance.)
The change in FoV going from R7+100-500L to R8+100L at the same subject distance was larger than I anticipated, but I managed to find the damselfly again
The R7 needs steady hands for that, I had to prune the resulting stack heavily to remove shots where everything was skewed a bit due the slow readout and the camera moving from side to side. I'd like to blame the wind, but there wasn't any this morning
The overlap was large enough that I could remove every other shot and then use the retouching tools in Helicon focus to remove the most obvious stacking errors.