Sold my AF Nikkor 300f4 EDIF and was looking for a 300f2.8 lens when a friend notified me that a photography store on eBay was going out of business and selling Sigma long lenses for good prices so I bid $1825 and to my surprise I won the auction and received a Sigma USA waranteed lens.

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  Fast and quiet and works quite well with Sigma's teleconverters.

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  Only weakness is the tripod collar could be a little longer like the one on the Sigma 120-300. My preference is for the center of gravity to be a little more towards the front rather than the rear of the lens.

Had to replace my 300 2.8 Nikon. The cost of a new Nikon was just a tad out of the question, at the time. I had used a 300 2.8 AF Sigma once before (on loan) and I was impressed with the reults. So I took a punt, while in London and purchased this lens, to be used mainly for soccer and baseball.

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  This lens is hitched to a Nikon D2X. The lens is light, but still needs a monpod. There was no evidence of it wanting to "hunt" in low light and it's auto focus was up to my expectations. I was really satisfied with the results, it produced in combination with the D2X. Yes.

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  It comes with a drop in filter (Polariser), but there appears to be no other filters to fiit (you know..red, yellow etc). Maybe Sigma needs to work on this. I look after my gear, so I don't anticipate a problem with this lens. As I said before, only time will tell.