BUG and BOKEH
Bokeh: In photography, bokeh is the aesthetic quality, size, shape, and intensity, of the blur in out-of-focus parts of an image, that is produced by the lens hitting a light source. Bokeh has been defined as "the way the lens renders out-of-focus points of light". Avoiding compositions that will include bokeh, or looking for compositions that will purposely create bokeh, depends on the personal preference of the photographer.