He started using his iPhone for recce shots when scouting locations. The ease of using the phone plus its ability to log GPS coordinates meant that a whole area could be scouted quicker. He found that the focal length of the iPhone camera was similar to the lens for his large format. Over time the iPhone images become their own project and now have been published and exhibited. Calverley says that there is something about the spontaniety of the little device that freed up his picture taking. More than once he had revisited a scene with his large format kit but could never match the image taken on the phone.