Mr Leonard said he saw someone standing near the middle of the tracks. When the train got to within 150m of the person, he blew the whistle. When he saw that they had not moved, he blew it again.
"By the time I realised he was not going to move, it was too late.
"You think he's going to take his photo and move, they always do but leave it late. He didn't move, he must have been preoccupied taking his photos, he was too late," Mr Leonard said.
Lisa Hartigan told the inquest she had witnessed the accident from her car, which was positioned about 10m away from the tracks.
She said Mr Duncraft did not move until the train was just 3m away from him, when he did a "funny step off and tried to step away" from the tracks.
Sergeant Matthew Frost, of Greymouth police, said the final photograph on Mr Duncraft's camera showed he was only a foot or two from the mainline, right in front of the train.
Mr Frost referred to an extract of a statement from Mr Duncraft's son, Lucas, who said that when his father was "concentrating hard on someone or something, he was sometimes hard to get out of it".
- The Greymouth Star