Bokeh is the term used to describe the quality of background blur in a photo,
i.e. how pleasing the blur looks of the background areas. Since the softness of the background blur is usually more important than how the foreground items are blurred, bokeh usually relates to the background blur.
The bokeh of a lens is influenced by numerous factors, including
- the lens design,
- specifically, how spherical aberrations are corrected,
- the number of blades in the aperture mechanism,
- focusing distance,
- the actual aperture used will also affect Read more inside...