A couple HN posters contacted me by email, and here's some additional info I sent them in response to their questions specific to the Hudson River VFR corridor.
An acquaintance of mine manufactures a reasonably-priced gyro mount for in-flight photography and videography and is based out of NY. He has some excellent sample videos on his site as well: http://www.aerialexposures.com/video3.htm
FAA Safety course required to access the corridor: https://www.faasafety.gov/gslac/ALC/course_content.aspx?cID=...
Cockpit reference material: http://www.faasafety.gov/files/gslac/courses/content/79/776/...
Sun n Fun (conference) presentation: https://www.youtube.com/watch?v=h3u_x6qhut0
An acquaintance of mine manufactures a reasonably-priced gyro mount for in-flight photography and videography and is based out of NY. He has some excellent sample videos on his site as well: http://www.aerialexposures.com/video3.htm