Good question Michael..remember a GAPW workshop I went to with John Shaw, he stated that a realease was needed for shot - Autumn, barn, somewhere in New England..turns out that this one place has ended up on so many calendars tha the owner requires a fee and release - so scenic work is changing too! I feel like you should NEVER give up your negatives - period. Now if you burn, spindle, shred, them that is fine. Even if a figure study of a friend, does not matter..in my mind they aren't much of a friend and secondly why the remorse...

Just my opinion and worth as much.