Whether you’re a hobbyist or a professional photographer, you should have come across the word “Bokeh” (pronounced BOH-kay) more than once. If it sounds Japanese, it’s because it is. Bokeh (or Boke) actually means blur or haze.
In photography, it refers to the effect created by areas in the photo that are out-of-focus (particularly the background). Photographers who make use of this effect play with the lens, aperture and focus, and employ a shallow depth of field.