Originally Posted by
Manfred M
No and legally I do not have to... He certainly knew I was taking his picture.
I own the copyright on original image and I can do whatever I want with it. Ethically, I thought about it for some time, but as this is largely use for educational and evaluation purposes, I don't really have any qualms here. I'm not making any money off the image nor am I giving anyone the right to reproduce and share it.
That being said, I have no issues taking that particular version down, if requested.