I give this well-acted movie six stars as I had seen it when it was first released in New Zealand (1966) and I had read the excellent book first.
Unfortunately, by comparison to the superb book, the movie seems tissue-thin and ends quickly without any of the genuine Aussie humour of the book - also bought again after a hunt.
The screenplay ought to be completely rewritten in 2020 and the movie re-shot.
I'd watch it.