Tamron AF 28-200mm F/3.8-5.6 XR Di Aspherical (IF) Macro Zoom Lens for Nikon Digital SLR Cameras from Digital Camera Showroom

Tamron has made this lightweight, compact high power zoom lens available with the Di optical system with improved multi-coating for digital SLR cameras as well as film cameras, further enhancing its ease of use and popularity.

Tamron AF 28-200mm F/3.8-5.6 XR Di Aspherical ...- User Rating:
Summary for Tamron AF 28-200mm F/3.8-5.6 XR Di Aspherical ...- An exception to Tamron's quality lenses
Notes on Tamron AF 28-200mm F/3.8-5.6 XR Di Aspherical ...- I was disappointed with this lens and eventually decided to return it. As the title of this brief review states - I hope this lens is the only exception to Tamron's quality lenses.
The cons: 1. Zooming ring is very stiff, so much so that it becomes a real problem; 2. Lack of sharpness, regardless of focusing mode. I shot a few hundred images with this lens and all looked too soft; 3. Most images came out darker or lighter than what you would've expected, regardless of WB or exposure settings. 4. Grainy pictures even in perfect shooting conditions. And lastly there was 0 pop to the images - even a picturesque scene would look dull and flat.
This lens needs to be redesigned from the ground up IMHO.

---