Good afternoon Martin,
You left the following comment at one of my macro's.
"Another great shot / I'm also interested in macro photography but dont have a capable lens. I take it you are using the Canon Canon EF 100mm f/2.8 or the L version?" and also the next question "How are you lighting these guys up?"...
I indeed use the EF 100mm f/2.8L Macro IS USM, I really can recommend this one. The sharpness is amazing and the IS works very, very fine. I'm not using any lighting accept the light nature provides. I never use a flash with macro photography. Normally I'm just looking for a nice composition and background, and I patiently wait with my shot until wind and light are optimal. Of course a not so hyperactive fly will help a lot!