See e.g. http://www.istockphoto.com/help/sell-stock/training-manuals/...
However, unlike model releases for people required for commercial (as in non-editorial) use like marketing and advertising, it's a very fuzzy area.
See e.g. http://www.istockphoto.com/help/sell-stock/training-manuals/...
However, unlike model releases for people required for commercial (as in non-editorial) use like marketing and advertising, it's a very fuzzy area.
"The legal issues surrounding model releases are complex and vary by jurisdiction."
It's generally pretty well established that a properly executed model release provides a pretty wide latitude of commercial usage--although one can always come up with corner cases, e.g. use of a photo in a context that implies the subject is a drug addict or something similar.
By contrast, there's very little legal precedent around the scope of property rights in commercial photography.