I just got my early Christmas present... My 500mm f/4P..... It's the older manual focus version, but it's far better than the one I didn't have. Here it is compared to the 70-200: It arrived while I was at work yesterday, and I didn't get home until after dark, so I just had to take it out today. I ran across this fellow (sharp-skinned hawk) at the local park while he was looking for a meal. It was very cloudy & dreary today, so I can't wait to see how this thing does with some better light.