I've acquired a Hasselblad 500CM mainly to replace my Mamiya C300f for 'studio' work. I use the Mamiya a lot for close-ups, but I'm a bit fed up with the parallax problems and having to use a paramender. I want to use the Hasselblad instead to get the same kind of close-ups (but not macro) - what extra gear do I now need to achieve this? The 500CM came with a standard 80mm lens.