Find a cheap as chips mini dv camera on gumtree.co.uk or ebay uk, that has analogue in and fire wire out. If you have a more recent mac, then you might need a thunderbolt to firewire adapter.
That is what I use and it is great, if it is important, then I capture onto mini-dv tape first, then later onto my macbook pro to edit, mini-dv tape is so cheap and stable in the long term, and if you look after the camera, it should be useful in years to come, hard drives will crash, good bye material...