Shoe Jewellery.

[steve-o]

http://www.paragon-press.com/lens/lenchart.htm this will explain it better than I could off the top of my head hahaha

it's bee a long time since I studied photography lol

as far as the lens, you should be able to pick up macro lenses second hand on ebay etc
there are cheaper brands you can go for like tamron, sigma etc
you could try adapter rings on the current lens... but in the long run wont be worth it

http://cgi.ebay.co.uk/Canon-50mm-EF-f2-5...2eaa2494f9 and http://cgi.ebay.co.uk/Canon-EF-S-60mm-f2...27ae440d7e might be worth looking into