
Average Reviews:

(More customer reviews)If you're like me, you can't find the Nikon VR lens anywhere unless it's being marked up 50-100% by businesses taking advantage of the shortage (supply & demand, right?).
After 2 months I got tired of waiting for the VR lens and bought this 18-200mm Tamron instead (vacation just days away). I have taken many dozens of walk around photos with this lens attached to my D200 getting a feel for it's capabilities. As a photo hobbyist rather than a real photographer, I produced some very acceptable results (and a few stinkers too).
At higher magnifications it is more susceptible to camera shake than say my 70-300 Sigma lens, and I believe that may be due to the Tamron being a "slower lens" requiring slower shutter speeds to get the same amount of light through it (at high zoom). I can see where the Nikon VR lens would win hands down here since it's faster AND has vibration reduction, BUT - Do not discount this lens as I have managed to, with patience & a steady hand, or a tripod in some cases, produced great results.
The Tamron is not all that noisy, and the auto focus is pretty quick. It does fail to autofocus in certain shady conditions so if you do most of your shooting in moderately dark shade you might run into trouble. It seems to do better with "contrasty" shade rather than dim grayish backgrounds where it really hunts for focus (mine anyway).
I can't seem to get consistent results with the Tamron using a flash indoors. About half of my flash photos are slightly out of focus despite my best efforts at hand holding the camera still. The clear pix are great however. I have yet to take any indoor pix using my SB-600 flash so all of my indoor shots to date are using the pop-up flash. That probably has no bearing on the fuzzy shots I've produced but I thought to mention it.
Overall I recommend this lens as a suitable outdoor walkaround lens. Nearly all of my outdoor shots are nicely sharp with great color and contrast. It's operation is smooth and feels good. For indoor shooting you MAY want to carry a faster lens like a fast, fixed (prime), or even the 18-70mm "kit" Nikon zoom which does significantly better indoors.
Click Here to see more reviews about: Tamron Autofocus 18-200mm f/3.5-6.3 XR Di II Macro Lens for Nikon Digital SLR Cameras
The Tamron AF18-200mm high power zoom lens features an entirely new optical design using XR (Extra Refractive Index) glass in an innovative way in order to optimize the overall distribution of optical power throughout the entire zoom range. This design reduces various aberrations to the absolute minimum and achieves remarkable downsizing at the same time. In addition, three hybrid aspherical lens elements and two LD (Low Dispersion) glass elements are used to accomplish effective compensation of on-axis and lateral chromatic aberrations, a critical factor to enhance the optical quality in digital photography. As a result, the lens provides outstanding optical quality in a multi-purpose zoom lens. A glare-reducing flower-shaped lens hood is included as a standard accessory. The special hood provides optimum shading of superfluous light rays that enter from the rectangular frame outside the image field. It employs a new optical system designed to confine the changing angles of incidences of light rays reaching the imager within a certain scope over the entire image field from the center to the periphery, by considering the effects of variances due to zooming. Complicated mechanisms are built in the compact body thanks to new mechanical artifices. The lens is a multi-purpose zoom lens, yet excellent portability and ease of use are assured. A number of invisible engineering innovations required to downsize the lens, produce high precision parts and increase durability are incorporated in the new AF18-200mm F/3.5-6.3 XR Di-II LD Aspherical (IF) MACRO
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