Hi, there is a PS action from Epaperpress (the guy who made PTLens
plugin) which works similarly, and Helicon Filter (another
plugin/editing suite) has a control for it too. It works by searching
for contrasty edges, doing colour selection and desaturating the
colour. Sometimes it helps, sometimes not. Adding an edge mask to the
way Godfrey quoted could perhaps help too.
>From my experience, I think it's both sensor and lens issue. And
exagerrated by the digital sensor/processing. It could show up on
film, but not so much.
Good light!
fra
