---

Hi Crex.
I use Canon 20D camera.
As for lens, I use Canon macro 100mm/2,8. I have also 70-300macro, 50mm, 24mm (all Sigma). Sometime all this lens are usefull, but for me 100mm is the best for Diptera (Odonata - 300mm, Coleoptera - 50mm).
But I'm sure that choise of lens is very much matter of personal test, preferable group and tacks you want to solve.
Nikita