I don't think they have a pure photographer anymore. Jason Lemiere and Tim Solar were doing the DSP photos for a long time but not anymore. On Carnivores they had a guy called Justin + an assistant, I'm not sure if he's with the band anymore, at least he wasn't in Europe. He did the M&G photos. Lorenzo is taking photos too whenever he's on tour with the band.
They all have different jobs too so they don't really have a person that does photos only. Fiore takes photos too here and there, but Waterman is long gone.