So on my local C-list there is a Sigma 100-500mm F/5.6-F/8. I tried googling it and got zero results (I got results of course but zero that matched 100-500mm), so I figured the guy was off his rocker. I figured he was selling a 50-500 or a 150-500mm. So he sent me some pictures, sure enough its a genuine 100-500mm F/5.6-8 Sigma manual focus lens. I was wondering if anyone else had ever heard of this lens. Not that I'm terribly interested in purchasing, the gentleman wants $500, and if I'm going to spend that much on a beat up old manual focus lens, I'll just spring for a 150-500mm HSM OS lens instead. And truthfully, I'm saving up for a 300mm F/2.8 AF-S II, that with teleconverters would be my super telephoto lens of choice. I do find it fascinating when a Google search brings back zero results. I wanted to see if anyone else out there had heard of it .