Just curious about the "specular" highlights on the flies (and to a lesser extent) those on the flowers. Are these the result of using flash? or small particles? (if so, what are they?) Anyone know?
I suspect the white dots are pollen, or similar, scattered among hairs and across wings of flies, and on flower petals. Bright sunlight or a speedlight would make then appear quite bright. The most obvious specular highlight (irregular reflection) is on the shiny shoulder of first fly.