Tamron A14 for Pentax

Pros: Focuses accurately on my camera, unlike Sigma 18-200.
Cons: Optically poor, even when compared to the (cheaper) Sigma 18-200.

This lens has a very convenient focal length range for digital SLRs. Its design is based on the very popular Tamron 28-300mm lens for film cameras (and full-frame digital cameras). But this convenience comes at a significant optical sacrifice - this ...

Pros: Cost, Sharpness, Hood Included, Range Covered. Fast Focus, No searching
Cons: Would be awesome at f2.8 like the 28-75, but still an awesome lens!

Note - There are two different versions of this lens, the f3.5-6.3 that we are reviewing here and one that starts with a f3.8 (it's a cheaper version). When I was researching this lens I found that many were calling the f3.8, the f3.5 version so make ...

Pros: Huge 18-200 focal range; fast focus; very compact and light; 6 year warranty
Cons: Purists criticize it but I can't see any significant defects in my images; bland style

Let me begin by saying I am not as technical as the 1st reviewer so this is a bit of a subjective laymans' opinion. I had an old heavily used Canon 28-200 that was decent but showing some age since it did not zoom very smoothly. I guess I could have ...

Pros: Convenience (not to be underestimated) Feels/works well Looks great - nice travel lens
Cons: Average performance Only magnifies to 150mm, not 200mm as Tamron claims

Credible results for such a convenient lens, but at 200mm it only matches 150mm of my other tele-zooms. Think of it as an 18-150mm (or 27-225mm equivalent). The Sigma 18-200mm is more like 18-135mm - simple tests comfirm this. The Tamron feels and looks good and is a great carry-around and travel lens which takes dependable shots, but it can't compete with the 18-70mm Nikkor or, of course, Nikkor primes for contrast or resolution. It just isn't up to the rigor of critical work. But I love to take it everywhere for grab shots - I get photographs I never normally would because I can take my D70 and this one lens with me daily in my pack.

Pros: One good all around lens.
Cons: The image quality can not compete with that of those fixed focal lens.

The wide zoom range 18-200mm, the small size, light weight, the reasonable price and an acceptable image quality make it one of the best travel lens on the market today.

I find myself travel solely with this lens instead of Minolta 24-105, Tamron 28-75 f2.8, Minolta 100 f2.8 macro, 75-300 etc.

Pros: Lots of zoom, Fast focus, Quality glass.
Cons: None.

This is a great lens for the money. When I bought this I didn't want to drop the cash required to get a similar Canon USM lens.

I have taken several thousand photos with this lens and have not had a hitch. It focuses fast to catch shots before they are gone.

I have not noticed any major flaws in the photos taken with this lens. Thus far I have been very impressed. I would recommend this lens to anyone in the prosumer market who is looking for quality glass at a reasonable price. I think it is the perfect match for your Canon Digital Rebel or Nikon D50

Pros: Very fast auto focus. Quality construction, and good warranty. Perfect focal length range.
Cons: Very soft. An 8MP camera won't compensate for a lens that is not sharp.

I bought this lens while on a trip to New York. It looked like it had a perfect range for a walk around lens. My other Tamron Lens (11-18mm) works great, so I took a chance. After seeing the pictures on a computer, and comparing with another zoom lens at the same 200mm focal length, the Tamron was way too soft. It cost me 160 bucks to return it, but it was either that, or give it away. I am going to go with a Canon 24-105 f/4L IS USM. It will cost much more, but I won't be irritated when I look at the pictures.

Pros: Versatile, great for travel.
Cons: Sharpness of images, sometimes hard for it to autofocus.

I had one of these for a short time. I was not satisfied with the focus speed or the sharpness I could achieve. I chose this over the equivalent Sigma after many recommendations from different stores - but reviews on the web are mixed. The range makes this a versatile lens and IMO excellent for a long trip if you don't like lugging many other lens around - but I would recommend the Nikon if you can handle the cost and the wait.

Pros: Good all around lens, fast focus, light weight
Cons: zoom ring takes getting used to, should come with a pouch

i shoot with d200's and have XD 18-70mm lens on one and a 18-200 VR on the other-I use D70S for backups and have 2, one with a Nikon 55-200 XD and the other has this 28-200 mm Tamron XR-this lens gets a decent amount of work, and is small for what it can do-I have not had any problems with sharpness, but make it a habit to try to shoot in well lit areas when going past 120 mm or use a tripod-it will not handle shake like the Nikon VR lens, but it also cost about 1/6 the price. Higher ISO (within reason) and faster shutter speed goes a long way, and I can grab it and get a good shot without removing lenses and risking dirt in the camera body.