My slip on that tree stump may have done in more then my back. I noticed a very small chip in the glass of my 24 to 120 Nikon lens. After doing a lot of research and checking my pockets I picked up the Sigma 18 to 200 OS HSM lens. With $75 back for any old lens it was a good deal. So I gave them an old Pro Speck broken lens I had and headed out to the wharf to try it out. Although its not a Nikon and slower at 200mm then the Nikon, for hundreds less this is a very good lens for the money.