UPDATE! (November 27 2008) Finally I got my 18-270mm VC in my hands! This lens is amazing, optically better then Tamron 18-250mm and Nikon 18-200mm VR. Even better, VC (Vibration Compensation) is very effective(up to 4-stops advantage)! My Nikkor 18-200mm VR is going... Detailed review will be coming soon.

Tamron keeps on surprising DSLR users with its ultra-zoom lenses with performance levels that once was never though to be possible. Tamron 18-250mm f3.5-6.3 since its first introduction has become one of the most versatile lens (13.8x zoom)for APS-C DSLR cameras while offering image quality that is competing with zoom lenses with less magnification ratios. Surely it has some drawbacks like being slow on the long side, chromatic aberrations in certain situations, etc. but overall I think it is a perfect all-round lens.

Now Tamron takes the ultra-zoom DSLR lenses to next level with the new AF 18-270mm F/3.5-6.3 Di II VC LD Aspherical (IF) Macro, taking the world record once again with the 15X zoom, and adding its Vibration Compensation system (VC) in to the game, making it even more attractive for Canon and Nikon users whose bodies lack sensor based Image stabilization.

Order Tamron AF 18-270mm F/3.5-6.3 Di II VC LD Aspherical (IF) Macro for Nikon (Best Price)

Order Tamron AF 18-270mm F/3.5-6.3 Di II VC LD Aspherical (IF) Macro for Canon (Best Price)

Tamron 18-270 F/3.5-6.3 Di II VC LD vs. 18-250 F/3.5-6.3 AF Di-II LD Comparison:

Well we don't have any information or real life samples showing the performance of the new 18-270mm yet but I expect it to be equal or better then the previous 18-250mm, otherwise I believe Tamron engineers would rather choose to keep the range at 250mm and make do with the addition of VC. The new 18-270mm VC will be available for only Canon and Nikon mounts but it is obviously not a big loss for the other mounts cause they all have built-in image stabilization systems and 20mm on the long end is not a big deal for most. And not to mention that the 18-250mm is still 120gr lighter and more compact than the 18-270mm which makes it an easier-to-carry walk around lens (and cheaper very likely). Other difference is the filter diameters of the two lens. 18-270mm has filter size of 72mm whereas the 18-250 has 62mm filter diameter, which means you have to pay more for the filters

Below is the spec comparison of the two Tamron ultra-zooms:

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