http://www.copyright.com.au/info%20s...tographers.pdf

This is the page i found last night, although now i read a little more, i think the CAL (Copyright agency Limited) is just an option you have for chasing up monies, by getting them to do the chasing for you.

I found this also just then:
http://www.copyright.org.au/informat...ign/visart.htm

http://www.copyright.org.au/pdf/acc/...s_pdf/G011.pdf

So basically you take photos, and if you see someone using them without your prior permission, you ask them nicesly for dosh. Coolio