> Jeff Keller <jrk_om@xxxxxxxxxxx> wrote:
>
> A wild guess is that when the lens is wide open it's aperture isn't
> limited
> solely by the aperture blades. Light coming away from the optical axis
> is
> limited by parts of the lens other than the blades. When it is stopped
> down
> the light is limited almost entirely by the blades (including the off
> axis
> light).
>
This seems like a reasonable interpretation.
...Wayne
Wayne Harridge
http://lrh.structuregraphs.com
==============================================
List usage info: http://www.zuikoholic.com
List nannies: olympusadmin@xxxxxxxxxx
==============================================
|