At our local nursery, Potter's, there is a long, sunny bench of ground cover plants, raised to easy viewing height. A swarm of yellow and black flies was buzzing around them, often standing still in the air, just under my nose. I couldn't resist them, and spent some time chasing them with my little pocket camera.
They were far too quick for me; I got dozens of photos of places where they had been a split second ago.
One finally parked on a green flower, and pretended to be part of it.