Yes and no if the whole photo is blurry then yes but if the background is just blurry then it's most likely bringing out an object in the photo
hope this helps
GENERAL OUT <span />
To me, the golden spiral is the proportional basis that makes the most sense. In a landscape painting the views eye is automatically directed to the center of the spiral and can be used by the artist to put their subject in the eye of the viewer.
Answer:
It will decrease the depth of field, then making the background blurry.