Fresh green light bokeh, suitable as video backgrounds for nature, ecology themes.<br /> In photography, bokeh is the blur,or the aesthetic quality of the blur,in out-of-focus areas of an image. Bokeh has been defined as "the way the lens renders out-of-focus points of light". However, 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%u2014"good" and "bad" bokeh, respectively<br />. 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.Bokeh is often most visible around small background highlights, such as specular reflections and light sources, which is why it is often associated with such areas
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