Originally posted by Ken R It is not a magical lens like the Canon 50mm f1.2L that I used yesterday as my main lens for portraits
As a 645D user myself I recommend the 150mm f/2.8, the newer D*FA 90mm f/2.8 macro OS is a very sharp lens but like its predecessor the 645 FA120mm f/4 macro, it does tend to have harsh bokeh.
For general purpose photography the 645 FA45-85mm f/4.5 coupled with the 645 FA80-160 f/4.5 are excellent zoom lenses - though my 80-160mm has problems focusing at the long end. Also the 645 FA150-300mm f/5.6 is also an excellent lens offering similar FOV to a 70-200mm f/2.8 Zoom lens.