Answer. The reason why the photographer chose to manipulate the picture was because he wanted to create a coping mechanism for the soldiers and the civilians during the civil war. Hence he blurred the lines.

White balance is the adjustment of a digital photograph to make its colors appear more realistic. “It's a way to set a photograph to neutral, to make the white look white,” says photographer and educator Adam Long.

Conclusion. When deciding on how to shoot black and white photography, my advice is always to shoot in raw and convert to black and white afterwards. In this way, you have more choice and you will always produce an image with the maximum amount of quality that your camera can produce.