Tamron AF 18-200mm F/3.5-6.3 XR Di-II LD Aspherical (IF) Macro (for Canon Digital SLR) Lens

I used this lens most of the time. the most important point is the ability to zoom 18-200mm, an enormous upgrade from a kitlens, which is only 18-55. like kitlens, you can use this lens for any condition. landscape, potrait, telephoto, and even macro. of course, the image cannot be compared to specialized lenses like ultra wide or 400mm, but the versatility is what counts. and it's very light also. for around Rs15000 or so, this lens is perfect as the first lens you buy after kitlens.

I owned a Fuji HS10 (30X zoom) and was delighted by the flexibility of composition i got with it.
When I moved to Nikon D5100, though I was loving the professional grade photos, I got bugged every time I had to change my lens. I was in the lookout for an all purpose lens which I can carry while traveling along with a 50mm prime.
I am more than satisfied with this lens. The little difference in clarity is negligible and cannot be distinguished with naked eye.
The DoF i get from lowest f number is adequate enough (though not as insanely great as that of a 50mm prime). Also the price makes it value for money.
Must buy for people who travel a lot and have to travel light and always on the go.

I bought this lens after my stock lens (Canon 18-55mm f/3.5-5.6) broke. I have been using this lens for quite a while now and I am pretty satisfied with the images and their qualities on a 6.3Mp Canon EOS Digital Rebel. I've taken this lens to many places I have visited and it has coped up well.
The disadvantages (as per me) of this lens are:
1) Changing focal lengths is quite a hard task as the rotating barrel is not easy to rotate.
2) The AutoFocus mechanism of this lens is quite noisy. It ruins the moment of the photograph.
3) The lens is quite heavy for a standard zoom lens. If you wear a neck strap and have this lens on, you will probably die of strain as all the weight is put over the neck.
4) If the lock provided in the lens isn't on, then the lens easily opens up, which could result to damage.

The advantages of having this lens are:
1) There is no need to carry around multiple lenses as this serves as the stock as well as a macro lens.
2) The 'lock' function available on this lens helps to prevent the lens to open itself while putting the camera in the cover.
3) This lens is good for bokeh as well!
4) The build quality is impressive.
5) Mount supports EOS-L so you can mount this lens on the budget cameras and even on the professional DSLRs like the 5DM2, 5DM3, 1DsM4.

Go ahead. Buy this product. This really is a wonderful lens. And priced at such a rate, this wont even make your pockets feel empty.
You could rather buy this lens and the Canon 50mm f/1.8 II and still save some money instead of buying the Sigma 18-200mm DC II OS...

PROs:
1. Build quality is good at this price.
2. Looks good with the golden ribbon.
3. Reasonably good image quality
4. Good bokeh on tele ranges.

CONs:
1. Lack of image stabilization. Images get affected at high zoom. One must remember the shutter speed to keep higher than reverse of the focal length.
2. Lens cap material does not seem to be well coated. After 2 months of use, i saw brownish rusting kind of layer on both sides of the cap.
3. In low light and high zoom situation, one have to be careful not too auto focus on the unintended area.

Overall it is a good buy and one cannot demand more at this price.

The Tamaron lens 18-200 mm is an excellent partner for your camera. I leave it with the camera every time without bothering to interchange the other lenses as this one covers the range which a camera enthusiast needs. Especially it comes handy when you are traveling and can go light on the luggage.

The lens gives decent quality images and am very satisfied with it. I would recommend this lens to anyone who wants to buy a good lens and is on a budget.