Part of the cause of this nervousness is a busy background that is not blurred out enough. They should not be jagged, either.īad bokeh typically has harsh outlines and jittery shapes or nervousness. They should be uniformly bright with no bright or harsh outline edges or light/dark dots in the center. Good bokeh disks are fairly easy to spot. These disks are created by out-of-focus specular lights or light reflection, and are usually round or roundish when the aperture is wide open. The out-of-focus bokeh disks quality is also an important indication of good bokeh. A good bokeh should be pleasant and should not distract the viewer from the subject in focus. What is typically considered a desirable bokeh is when the background blur has a creaminess look to it, with soft and smooth transition between tonal areas and from out-of-focus areas to in-focus areas. Judging what a “good bokeh” is can be pretty subjective, of course. So in short, good bokeh is about the quality of the blur, not the amount of blur. All lenses can blur the background, but not all lenses can render beautiful bokeh. The shallow DOF can contribute to the look of beautiful bokeh, but it is only part of the story. Contrary to popular belief, quality bokeh is not about how shallow the depth of field (DOF) is or the amount of blur in an image.
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