I am far from being an expert but, with modern photographic equipment, there is no need to fly low in order to take good photographs.
Earlier this year I took a friend up to take photographs of some friend's houses as presents. We did not go below 1500' and the quality of the pictures was as good as anything I have seen sold on the doorstep.
I would add that the weather at the time was not perfect, being fairly gloomy and viz about 10km.