This tour was one of the best if not THE best experiences while staying on the island. The people in the shop are very friendly but without pushing too much. The tour guide, Levi, is a very good photographer himself. He was very helpful by not only bringing to picturesque sites, but by giving advices on shooting directions, composition, camera settings, etc. And he is really enjoying what he is doing.
One advice: do this tour at the very beginning of your stay.