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.

Understanding white balance in digital photography. To counteract this, you can use your camera's white balance settings to get rid of the blue cast or you can use post-production software, like Adobe Photoshop, to make Color Balance adjustments. Different lighting situations create different color temperatures.

Start with a low ISO As we know, however, using a high ISO when shooting digitally will result in noise, especially in the shadows. Because shadows are essential in black and white photography, you want to keep them as deep and clear as possible, so start with ISO 100 and go up only if you must.