Having read the book and met both Greg Marinovitch and Joao Silva (just before he was seriously injured in Afghanistan), I had mixed feelings about this.
I think the movie captures the essence of the time well enough, though there are several notable omissions, such as the capture on film of white AWB members being executed by black militants. As a result it seems a little one-sided with the whites (quite rightly) being seen as the aggressors or fomentors of the violence in the townships, with little or no indication of the fear that many whites felt towards blacks at that time.
As a docu-drama it falls down for me as it skates over some of the more important issues; as pure entertainment it fulfills the brief admirably with plenty of action and excitement, but the characters still seem a bit two-dimensional - at least they look as if they are actually taking photographs rather than posing with cameras - plus there are also plenty of nice old Nikons to keep camera-spotters happy...
The 'making-of' extra features are well worth watching and there's a really beautiful piece by one of the township kids who spent a day playing roving reporter.
In the end I'd give it a tentative 8 out of 10. For the price it's worth buying anyway.