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Old Jan 20, 2006, 2:28 PM   #1
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Sigma 18-200mm & Tamron 18-200mm

Forgive me if this question has been asked before but,does anyone have any first hand experience of either of these two zoom lens.

I would welcome any comments about their respective performance & if they are up to the mark.
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Old Jan 20, 2006, 4:10 PM   #2
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catbells-

I have used the Pentax 50-200mm lens and have been quite happy with it. Here is a sample photo. It was taken hand held.

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Old Jan 20, 2006, 9:01 PM   #3
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i think there's a review at kenrockwell.com of the tamron lens. he rates it as "not bad," which, considering his apparent dislike of zooms, is probably close to an accolade. i agree that the pentax 50-200 is very nice, but there are times when one wants it all...
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Old Jan 21, 2006, 9:56 AM   #4
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I've just tried the Tamron 18-200mm & at the 18-55mm it is inferior to the Pentax 18-55mm; soft at 18mm & 55mm - reasonable in-between but not as good as the Pentax. I also noted that 'it ran out of zoom' after 135mm which was in keeping with what I'd read in one review - it might just be that the zoom in non linear as the 'magnification' was certainly greater than 135mm.

I use the Pentax 18-55mm most of the time with a Sigma 28-135mm to extend the focal length; the Sigmalens is inferior to Pentax 18-55mm within the limits of it's focal length.

Ideally, I would like one lens to cover 28-200mm (in SRL terms i.e. 18mm-125mm) but, & it's a big BUT, it has to be as least as good as the quality that the Pentax 18-55mm provides.

I hope to try out the Sigma 18-200mm but if reviews that I've read are anything to go by, I don't hold out much hope.

The Pentax 50-200mm looks like the favourite at the moment.
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Old Jan 21, 2006, 10:36 AM   #5
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definately pentax at 18 but it's hard to tell about the tamron at 55. it would also make a diff at the aperture you use.
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Old Jan 21, 2006, 1:56 PM   #6
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The earlier comparison was done close to the center of the image; these are taken from the edge of the image which, IMHO, confirms the Pentax as the better of the two.
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Old Jan 21, 2006, 4:43 PM   #7
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most definately
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Old Jan 21, 2006, 6:42 PM   #8
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I bought the Sigma 28~300 lense for my 35mm camera around two years ago and was very satisfied all in all with it`s performance. It is indeed a very versitle lense because of it`s wide zoom ratio. It`s not perfect, but for the price, I can`t complain.

Hopefully I`ll be ordering a DS soon, and when I do, I might also order the Sigma digital 18~200 lense also. However, while I was checking on-line for the 18~200 lense and found a few sites that list it, like sigma4less.com, but very few sources seem to have it in stock.
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Old Jan 31, 2006, 8:40 AM   #9
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http://www.rtfract.com/d70sigma.htmThese are not mine just something I came accross
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Old Jan 31, 2006, 11:14 AM   #10
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Mark47 wrote:

Quote:
http://www.rtfract.com/d70sigma.htmThese are not mine just something I came accross
Thanks for the link. an interesting collection of images which on first glance appear to reflect well on the Sigma 18-200mm.


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