I've just got a set of extension tubes and these are the first attempts with it (link to album below). I'm pretty happy with them but I can't step down past about f10 with flash + natural light or about f6.3 with flash alone. I'm after some feedback on the shots (focus, sharpness etc) and some help/suggestions for lighting.
https://flic.kr/s/aHskuFiBcS
https://flic.kr/s/aHskuFiBcS