Olympus and Pentax pinhole body caps now avilable from holgamods 27 December, 200627 December, 2006 Nicolai Grossman Pinhole, Product News Holgamods, the place to go if you want a Holga modified into usefulness and don’t want to mess with it yourself, have added Olympus and Pentax to their range of SLR pinhole body caps. Dig!