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Old Feb 17, 2006, 2:16 AM   #21
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Idan wrote:
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Can someone suggest a good 18-200mm lens as all-around lens.
The Nikon 18-200mm VRII lens is nice piece of equipment. It does not come cheap, but I think it's worth the money.
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Old Feb 17, 2006, 4:05 AM   #22
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I don't intend to pay that much for the Nikon 18-200m lens I am considering the Sigma 18-200mm, What do you think about this lens, Sharpness, distortion, focus ? And where can I find images that were taken with it (except pbase.com) ?
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Old Feb 17, 2006, 6:27 AM   #23
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I would avoid any ultrazoom (except the nikon 18-200vr). In terms of build quality and optical performance, you will have issues such as distortion with any ultrazoom. Getting dust on the sensor is really a non issue that can be taken care of easily. I have a D70 and D50 and have only cleaned the sensor once in over a year of combined use....and I change lenses frequently. Make sure the camera is pointed down and turned off with the new lens ready to mount, and you will not have any issues.
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Old Feb 17, 2006, 6:33 AM   #24
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Have you seen photos taken with the Sigma 18-200 or the Tamron 18-200 that you can be sure that they are not that good, consider that the Tamron 18-200 got a "Best consumer lens of 2005" TIPA Award and "Editor's choice award 05" from American-Photo and of course there is a reason for that, is it ?
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Old Feb 17, 2006, 11:16 AM   #25
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First,both areextremely slow at the 200mm end....a max aperature of only f/6.3. I could add a teleconverter to many lenses for less money and have as much speed and more reach. Also an aperature this slow makes using the zoom indoors pointless. Another thing to consider, is that most lenses are sharpest when stopped down from their max aperature...you're looking at this lens being sharpest at f/11 or even smaller....this will require either very bright light, or slower shutter speeds. It also limits your ability to blur backgrounds while keeping your subject sharp.

2nd, optically these superzooms are very bad at 18-24mm focal lengths. Distortion at 18mm is almost uncorrectable. Outdoors, shooting landscapes or architecture, this is a deal killer. They also show more distortion throughout the entire zoom range, enough that it is noticable.

For the same amount of money, you could get the 2 lens kit which is going to be faster in focusing, sharper, show less distortion, have as much reach, and be a stop or so faster in aperature in the longer zoom range.

These lenses aren't bad...if you want a do it all, everyday lens and can deal with the distortion and speed issues then go for it. I just think you could do better optically, for less money.

The awards you mention really don't mean that much. Magazines rarely give bad reviews (remember they make their money from ad dollars the camera and lens companies pay them).
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Old Feb 17, 2006, 1:56 PM   #26
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Idan wrote:
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Have you seen photos taken with the Sigma 18-200 or the Tamron 18-200 that you can be sure that they are not that good, consider that the Tamron 18-200 got a "Best consumer lens of 2005" TIPA Award and "Editor's choice award 05" from American-Photo and of course there is a reason for that, is it ?

My first lens was Tamron 18-200 andit has lots of distortion andcorner sharpness was bad (specially right side). Maybe my copy was bad.

I got Nkon 18-200mm VRII now and I just can tell one word "excellent" if yougo with one lens (it'snot cheap but worth it).

Good luck...
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