A hornet (
vespa crabro) series doing a refuel of plant sap (their aviation fuel) at a white syringa.
Somehow I don't understand the fear people have from those as they are quite inoffensive to humans - esp. compared to wasps.
I can tell you as I have already been stung by a wasp this year. These were so relaxed that I could get almost as close as MFD of the 100L (30 cm).
Look at the shape of the compound eye, look at their barbed feet, look at their mandibles, and the neck is white - as it is with the bees.
It's really fascinating to me.
Edit: I also found that if I approached them too fast they were showing a defensive attitude by raising and spreading their fore legs.
I know this behaviour from mantises but never saw this from hornets or wasps before.
5D3, 100L, 1/80, f/16, macro ring light, fill flash, some cropping
Closeup, 1:1
This one is at MFD and with almost no cropping