Sigma APO 100-300mm F4 EX IF HSM for Nikon AF-D

Pros: Reasonably priced. Excellent performance for the cost.

Cons: Slow to auto focus at the far end.

Review: FIRST THE SPECS, FACTS AND FIGURES:


Using what they call original three group zoom technology, Sigma has created the most compact zoom lens in its class. This lens is less than 4 inches long and under 2.8 inches diameter....

Pros: Easy price, fast responsive focus, good resolution

Cons: None experienced to date, met expectations or exceeded them

Review: I am a Nikon person, having been a Canon person, but this lens makes one think there is a life worth seeing outside of these mfgrs. I have not been disappointed with this lens yet. I bought it for sports shooting and it has performed better than I ...