I would like to start a new magazine for models. I have some models that would like to sell me some of their pictures to use in the magazine. Is it ok to purchase the pictures from the models to use in the magazine, without getting a model release, since I am purchasing the pictures and did not do the photographs ? Or do I need to get a model release too ? I would think I would need a model release from a model if I am the photographer who took the pictures and then paid the model.