A happy baby on a train: Dina Alfasi’s best phone picture

That the young girl in the foreground was a soldier with a gun on her knee is an integral part of that moment'

Dina Alfasi has often said that her favourite place to shoot is on the train. It's not only a mobile studio with, as she puts it, great natural light and interesting subjects; it also lends itself to contemplation, to being in the moment.

The Israeli photographer was on her way to work in Haifa, Israel when this baby started laughing. It was 8am, on a June morning. The child was seated on the table: the rolling landscape beyond the window and the young women on the seats opposite vying for her attention. When they got her to laugh, the whole coach joined in. There was a dreamy sense of joy," Alfasi says, a pure moment of unity and innocence." It is that feeling she sought to retain with any image adjustments - the gentle colour, the Magritte clouds, the painterly highlights along chin and cheek. That the young woman in the foreground was a soldier with a gun on her knee is an integral part of that moment.