[OM] Re: Tamron 350/5.6 cat

[Chuck Norcutt]

Here's a soft focus Rodagon.  No variable aperture though.  Just 
replaceable aperture/diffusion disks
<http://glennview.com/jpgs/lens/300imagon/big_1.jpg>

Chuck Norcutt


Jeff Keller wrote:

> 
> I think some of the soft focus lenses use(ed) numerous off axis holes but 
> evenly distributed around the axis to give variable softness. As the lens is 
> stopped down different holes are covered up. I guess the multiple holes 
> would give a shallower DOF than the aperture setting would imply and also 
> add more diffraction.



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