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But it makes me wonder what is he trying to hide? I prefer a technical picture showing the details. Not pictures that you can't really see details because of this. And of course I know how easy it is to take a picture and not show problems. Back when I had a studio business I would always ask an older person "how much younger do you want to look" when processing their photos.
There are starlight filters that show minimal distortions. But this is off-topic so please disregard. The coach does look interesting and worth further investigation.