On Wed, 25 Oct 2000, Andrew Fildes wrote:
> Doesn't the 90 have lots more aperture blades? I thought that was the
> difference (nice, round diaphragm hole, like a leica).
> Andrew
That's only part of it. The degree to which spherical aberration
is corrected play a major part in the quality of Bokeh. When shooting
wide open, all lenses have 'circular apertures', regardless of the number
of blades, and you'll notice their Bokeh is different.
*= Doris Fang =*
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