Kali, can you explain in more detail how you did this with your extension tube? I tried it, but couldn't get it to work. Just when you have time. Thanks! :)
@juliedduncan i cut a circle of black paper just a bit bigger than the extension tube part, i only used the ring that connects the rest of the tubes to the camera, i put that in just by pressing it in around the edges and it stayed there without any tape, used a pin to make small a hole in the centre and thats it.
@juliedduncan actually looking at it the smallest number one extension tube is there too, the extra bit of length helps to hold it in...just blocking off the body hole with black paper and i am amazed that a pinprick works like that!