Definitions for "Bokeh"
n. japanese term for blur, or out-of-focus. Pronounced bow-keh, with the first syllable soft, and the second one hard. The anglisised proununciation sounds more like "bow-ka" with the accent on the first syllable. It's a way of describing how out of focus areas are rendered in the image. Despite popular belief here and elsewhere, bokeh is not limited to describing how actual points of light are rendered. It's just that an out of focus point of light is the best and easiest way of describing and classifying the bokeh of a lens. Classifications includes donut, flat, and indistinct. The latter is generally preferable since it gives a softer and better blended out-of-focus background. Bokeh is subjective however, what looks good to one person may not be good for another. _______________________________________________________
Bokeh describes the rendition of out-of-focus points of light. It describes the appearance or "feel" of out-of-focus backgrounds and foregrounds.
Bokeh describes the rendition of out-of-focus points of light. Differing amounts of spherical aberration alter how lenses render out-of-focus points of light, and thus their bokeh. The word "bokeh" comes from the Japanese word "boke" (pronounced bo-keh) which literally means fuzziness or dizziness. For a full description go to http://www.kenrockwell.com/tech/bokeh.htm (see: aberration)