The attached portrait happens to have been shot at 135mm with a 70-200mm f/2.8 IS II. The woman's face is not exactly facing the camera, being rotated a few degrees. There is variation in the resolution of her right eyebrow vs. her left eyebrow. The hair of her bangs is tack sharp, but hair by her ears is clearly out of the DOF. If you look at her hair behind her ears, it is clearly in soft focus. This was shot with a 40D at 135mm, 1/400 sec @ f/5. I like the bokeh of the foliage behind her; it isn't distracting but it wasn't turned into green mush. I cannot imagine this portrait would have been as effective if shot at f/2 with a prime, let alone at f/2.8 with this zoom. While I might have shot it today with my 6D, I don't see how anyone could complain about the IQ of this "obsolete" 10.1 megapixel camera. The woman's only complaint was there was too much detail, showing her age! (She was 63 when this photo was taken.) With what I shoot, I would have no use for the 135mm f/2 prime, but if I was shooting indoor sports, it might be a different story.