Toine wrote:
"STF lenses include an apodization element in their optical formulas
which creates the STF effect."
Apodization?? That's new for me. This page explains it:
http://www.4photos.de/camera-diy/Apodization-Filter.html
Replacing the aperture with a gradiant aperture. Another DIY project
on my bucket list
I think I might have actually asked about this on the PDML a while back
and had someone point me to it. It's not quite so much that, as
applying a gradient to one of the lens elements. I suspect that it only
affects the system when it is wide open.
I wonder if you could also do something with "lacework" on the aperture
leaves so that the edges of the aperture are themselves effectively a
gradient.
On 4 May 2016 at 05:58, Larry Colen<[email protected]> wrote:
Jostein should check this out
http://www.pentaxforums.com/articles/photo-articles/smooth-trans-focus-sony-135mm-f28-guide.html?src=eml
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