There seem to be several options:
1. A macro adapter (also known as a reversing ring) that allows a regular lens to be reversed (so it makes small things large, rather than large things small!)
2. A macro coupler that allows a reversed lens to be attached to a regular lens using the filter thread. So you could get a combination of a macro lens, and a reversed lens, for example.
3. Extension tubes (which don't really provide much more magnification).
4. Bellows (flexible extension tubes).
5. A dedicated lens (such as the Canon MP-E 65) which isn't cheap!
I was wondering what folks out there are using, and what success they're having. Please post examples if you can. An example of a Purple Hairstreak egg using a 105mm macro lens + extension tubes is attached. But I'd like to get closer
![Smile :)](./images/smilies/icon_smile.gif)
Cheers,
- Pete