Glenn, I contacted the state park and was directed to their film guidelines website:
http://www.parks.ca.gov/default.asp?page_id=24777
They have a 43 page pdf file. Your situation is described on page 36. Posting a picture on a website forum or entering a photo contest is NOT defined as commercial use. You are correct, t
his is obviously their "interpretation".
Page 35, section #4 Commercial Still Photography, does go beyond what I have seen in the national park regulations:
"This category covers photography for sale or profit aside from filming for motion pictures or television. Such photography may be permitted after appropriate application and required insurance. Commercial still photography permits are handled in the same manner as commercial motion picture, video and television photography."
- i.e. you need a permit and insurance if you plan to
sell a landscape or wildlife print !
It is a great leap from these requlations to:..." the California State Parks had been having a problem with photographers posting images taken in the parks on forums and entering them in competitions without the State parks express permission."
Where does the law require their permission for this activity ???