Here is a presentation that I did on the topic for an upcoming lecture at Purdue on the topic: Laws that Apply to Agriculture Photographers and Videographers from Cari Rincker
I wrote an article recently on the legal side of farm photography, which can be accessed from my JD Supra page here. The article gives a brief overview of the law of photography and the need for a model release and/or property release in some circumstances. Happy reading!
