I was in one of my local camera shops this weekend and they had a used 180/2.8 for $370. It looked great, cosmetically, so I had them take it out so I could mount it on my D80. This is the first time I have ever tried this lens so I'm not sure what I should expect, but it was slooooowwwww to focus. If it was close to in-focus, it would it pretty quick. Going from, say, infinity to 3', however, was not good in my opinon. It felt as if I could have focused it manually more quickly. Here's my question. Is this normal for this lens? This doesn't seem right, but when I mentioned it to the staff they said an "Old Nikon Buff" had been in and told them this was common with older versions of the 180. Anybody have any experience to back this up? It just seemed like the lens wasn't "quite right".