AF 18-270mm f/3.5-6.3 Di II VC (Vibration Compensation) Tamron zoom lens
Not compatible with 35mm film cameras or full-frame (FX format) digital Nikon D700 or D3 digital SLRs
Built-in motor for full autofocus capability with Nikon D40, D40x, D60, and D5000 model digital SLRs
Built-in vibration compensation for blur-free photos
Low-dispersion glass and hybrid aspherical glass elements for superior image quality
This review is from: Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical IF Macro Zoom Lens with Built in Motor for Nikon DSLR CamerasLength:: 4:13 MinsTamron's new lens offers a 15X zoom range, the most you will find for a DSLR. But do you have to give up too much image quality as a result? I was looking for a lens for travel and for casual shots that could replace my need for both wide angle through the telephoto range and hopefully replace several other lenses that I typically have to bring with me. Overall, I'm very pleased with this new lens, it did better than I was expecting. The quality of the photos is almost on par as my Canon 70-300mm (but of course not my 70-200 f/2.8) with a much more usable range for an everyday lens. I also tend to have back problems, so the less weight I carry on vacations, the better! A few negatives: the lens does not zoom smoothly through its whole range, particularly when zooming from wide to tele, and you only have f/6.3 when fully zoomed (common with superzooms). The zoom was nice and tight when I got the lens (as shown in the video) but after a few weeks of use, it creeps pretty badly. The lens hood is fairly small, may not work as well at the 150mm+ range (but nice that they include one at all!) Also a typical issue for super zooms, as the hood has to be designed to minimize vignetting at the wide end. No full-time manual focus, which I don't use enough typically to be bothered about. The focus ring is located at the front of the lens and it's pretty easy to switch back and forth and use it as needed, but this is definitely not a great lens for using manual focus on. Some distortion in images at both ends as you would expect for a super-zoom, the barrel distortion at the wide end in particular is fairly obvious, but correctable in most situations. CA and vignetting on my copy are reasonable for a lens in this price range, with CA most apparent at the upper end of the range. Macro feature is nice to have, but somewhat underwhelming performance and certainly no substitute for a true macro lens. The lens has a nice, solid feel to it, while still being fairly lightweight. I've used the Canon 70-300mm DO lens in the past which was comparable to this in size, but MUCH heavier. The focus is fairly quiet as well, not USM quiet, but considerably better than some other off-brand lenses I've used. As I usually find with off-brand lenses, the autofocus is not quite as fast and accurate as Canon lenses, but it seems considerably better than some other Tamron lenses I've used and not enough to be a problem for casual use. I give the lens 5 stars, not because it takes the greatest photos you will ever see, but because it is the first super-zoom I have tried that performs good enough that I am willing to use it, as a best-in-its-class lens. It's a perfect lens in particular for any new DSLR owner that can't afford to invest thousands in really high quality and/or multiple lenses, or for someone like me that is often limited in the equipment they can carry at one time. The lack of smoothness in the zoom ring and the creep are the primary annoyances for me, but I've yet to use a long telephoto lens in this price range that doesn't creep, so hard to be really tough on it for that. I wouldn't use it as my primary sports lens (my f/2.8 will do that job far better) nor as an architectural wide angle lens but for a general all-purpose casual lens, it's got a great feature set and well worth considering....
This review is from: Tamron AF 18-270mm f/3.5-6.3 Di II VC LD Aspherical IF Macro Zoom Lens with Built in Motor for Nikon DSLR CamerasI've had mine for three weeks now and have taken several hundred pictures under a wide range of conditions. I read all the reviews here and on other sites, both for Canon and Nikon mounts before I made a purchase. I hope to compare and contrast my experiences with what I've read here and on other review sites. My camera body is a Canon XTi.I read some reviews that complained of chromatic aberration (CA). Yes, there is some at the edges, at some focal lengths and apertures. If you look at the test results ([...]) you will see that the lens performs excellently at around f-6.7 to f-8. Almost no CA and excellent sharpness. This lens simply wants to run best at about f-8. So, I've taken to using my camera in Av mode at f-8 when I'm using this lens. Excellent results with no visible CA.I read some reviews that complained of 'softness' of the images in some situations. This is attributable to two issues. One is that if you let the camera program mode choose an aperture, you may get a very high number. At very high-number apertures (f-16+) the lens is limited in sharpness, not by any design fault, but by a basic law of physics. It's near the diffraction limit for that aperture. The second issue is that at long focal lengths the adaptive multi-point auto-focus algorithms mess up. If you're not watching carefully they may focus on a bush that's 50 feet away leaving the landscape that you were trying to capture out of focus. Blame the camera and not the lens. What I've been doing is using spot focus at longer focal lengths. Focus lock on what is supposed to be in focus and then frame the scene. Do that, and run Av mode at f-8 so you don't get high f-numbers, and 'softness' will not be an issue.I've read some complaints of slowness or inconsistency of focus. This seems to come mainly from Nikon owners. For me, it focuses very quickly and quietly under all lighting situations. No problems at all. I've taken it out on a da...
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