As I have said in the past - it's the one Pentax lens I got rid of
because I wasn't happy with it.  I much prefer the 80-320.

Godfrey DiGiorgi mused:
> 
> This is pretty strange bokeh too...
> 
>    http://homepage.mac.com/godders/100-300-oof-render.jpg
> 
> Taken with a Pentax F100-300/4.5-5.6 @ 300mm f/6.3. The detail portion 
> is exactly as it came out of the camera, processed at the Camera Raw 
> defaults.
> 
> Focus seemed to be right on the money ... in the full frame, those 
> plants at the bottom left were in the same plane as the lamp housing, 
> and the lines in the lamp housing and on the lamppost resolve in the 
> image as expected. But oh those leaves behind and around it!
> 
> Makes me think this is a mirror lens... ;-)
> 
> Godfrey
> 
> 
> On Apr 5, 2005, at 6:01 PM, Herb Chong wrote:
> 
> > try the Sigma 50-500 for an acceptable 10X zoom. bokeh is really 
> > strange at the long end, but i think all Sigma lenses i have tried 
> > have odd bokeh. that's one reason for going small apertures and 
> > getting maximum DOF.
> 

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