Mike Johnston <[EMAIL PROTECTED]> wrote: >> Bokeh, as I understand it, is controlled mainly >> by the aperture blades > >No, not really. The aperture blades have an effect on the shape of specular >out-of-focus highlights, but the essential characteristics of _bokeh_ have >more to do with off-axis aberrations and correction of spherical aberration. >So it's essentially part of the lens design itself. > >The idea that it's all a matter of the aperture blades is a nice simple idea >that is gaining some sway on the internet, but it's not really that simple.
Some lens manufacturers are pushing that misconception. For obvious reasons: Oversimplification has long been part of the advertising lexicon. -- Mark Roberts Photography and writing www.robertstech.com
