8 out of 10 points and recommendedokay construction, broad zoom rangea little soft
a pretty good lens for the money. I'll leave a more detailed reveiew after I've had a little more time to shoot with this lens.reviewed June 19th, 2006 (purchased for $550)
I tested the zoom of my new 18-200mm Sigma DC against the zoom of my Nikon 55-200mm DX and I found that the zoom on the Sigma is not as good. It almost seems like the lens only does 18-150mm. I'm only a novice at photography, but I set my D50 up on a tripod and shot at a stationary subject using my different lenses. The Sigma just seems to be weaker. I'm not sure if I'm going to keep it because of this. Aside from the zoom, the quality is what you'd expect for the money and it is reasonably sharp. It is a little noisy since it doesn't have a HSM silent AF motor, but that is to be expected. The manual focus grip is a nice size and it moves just the right amount. Not too much, not too little. I just wish the zoom at 200mm was stronger.