Depth of Field is the perceived sharpness of focus across multiple regions of a photo. The photo to the right has a narrow depth of field in that only a small portion of the overall picture (the budding tree stem) appears in focus while the background is blurred. This relative sharpness makes the viewer focus on the subject while providing context and fill to the rest of the frame. Cognitively the viewer assumes that the background is farther (deeper) in the distance giving