One thing I don't understand: when people talk about fisheye solutions for the Sony system, they only ever mention the Canon 8-15. Has nobody thought about using the 28 mm with the Fish Eye Converter? I do have the 28-60, but I want to take split shots, so WWL-1 is out. I have the 16-35 GM II, but don't want to travel with a 230 mm dome port. Or: is it possible to take split shots with the WACP-C?