I have a Nikon FM2n and Olympus OM2n and I want a portrait lens, I'm undecided between these two. I walked into the camera store and found, what I think, are very good prices for both of these lenses ($395 for Nikkor and $594.95 for Zuiko). How do these compare in terms of bokeh and sharpness? Or is it really 85mm FOV vs 100mm FOV. I have no experience with a telephoto so I'm not sure which FOV I'd prefer.