<P> In photography , bokeh ( originally / ˈboʊkɛ / , / ˈboʊkeɪ / BOH - kay -- also sometimes pronounced as / ˈboʊkə / BOH - kə , Japanese : ( boke ) ) is the aesthetic quality of the blur produced in the out - of - focus parts of an image produced by a lens . Bokeh has been defined as `` the way the lens renders out - of - focus points of light '' . Differences in lens aberrations and aperture shape cause some lens designs to blur the image in a way that is pleasing to the eye , while others produce blurring that is unpleasant or distracting -- `` good '' and `` bad '' bokeh , respectively . Bokeh occurs for parts of the scene that lie outside the depth of field . Photographers sometimes deliberately use a shallow focus technique to create images with prominent out - of - focus regions . </P>
<P> In photography , bokeh ( originally / ˈboʊkɛ / , / ˈboʊkeɪ / BOH - kay -- also sometimes pronounced as / ˈboʊkə / BOH - kə , Japanese : ( boke ) ) is the aesthetic quality of the blur produced in the out - of - focus parts of an image produced by a lens . Bokeh has been defined as `` the way the lens renders out - of - focus points of light '' . Differences in lens aberrations and aperture shape cause some lens designs to blur the image in a way that is pleasing to the eye , while others produce blurring that is unpleasant or distracting -- `` good '' and `` bad '' bokeh , respectively . Bokeh occurs for parts of the scene that lie outside the depth of field . Photographers sometimes deliberately use a shallow focus technique to create images with prominent out - of - focus regions . </P>
what is it called when you blur the background in a photo
what is it called when you blur the background in a photo
, bokeh
, bokeh