1. A method, comprising: generating, by one or more computing devices, a bokeh effect in a blur region of an image, wherein said generating the bokeh effect comprises: obtaining input indicating a boost amount for the bokeh effect, an upper threshold value, and a lower threshold value, wherein the upper and lower threshold values indicate a light range for the bokeh effect; and applying the bokeh effect within the blur region of the image by boosting intensity of specular highlights in the image according to the boost amount and the light range, wherein the specular highlights within the image to which the bokeh effect is applied are determined according to the light range.