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Old Feb 17, 2006, 1:28 AM   #11
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I have been using a cheapo Toikina AF195. Build is plasticky but quite solid and sturdy. Quality is nothing to be complaint of.
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Old Feb 18, 2006, 12:40 AM   #12
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Rambler358 wrote:
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Jacqueaux wrote:
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BE WARNED the Sigma 18-50/3.5.5.6 has a history of back focus problems on the 7D (and likely 5D).
I thought the focus problems were with the higher-end Sigma 18-50mm f/2.8 model, not so? :?
Not to my knowledge. The 3.5-5.6 definitely has problems, as I read of others also having the problems. I am not famliar with any with the 2.8
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Old Feb 18, 2006, 12:43 AM   #13
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Mercury694 wrote:
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I have also heard good things about that Vivitar lens, that it's remarkably sharp for its price. Anyone here have one?



Great simple explanation, William.

I had the Vivitar 19-35 Series 1 3.5-4.5 for several months and was reasonably pleased with it. I have since upgraded to the KM 18-70. I purchased the Vivitar used from B&H for $99. If you can find it cheaper than that, go for it. But since the KM 18-70 goes for $150 (cheaper if you look around, perhaps), the price difference is not much, and the range of the KM is greater.
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Old Feb 20, 2006, 1:56 AM   #14
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Not sure how the Sigma compares to the KM. I have the Sigma 28-70 3.5-4.5, and it compares quite favorably to the KM 18-70 which was part of the kit. The Sigma produces clearly sharper images. (see comparison crops below, shot under the exact same conditions). But I am not sure how the wider angle Sigma compares.

KM 18-70:


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Old Feb 20, 2006, 1:56 AM   #15
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Sigma 28-70:


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Old Apr 24, 2006, 5:31 PM   #16
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I wanted quality, so I opted for the Konica-Minolta 28mm fixed lens (the f2 model.) All I can say is this: if you own a 5D or 7D, you owe it to yourself to try the 28mm. Awesome lens! It cost more than I wanted to spend, but the results are a vastly superior to any other lens I own.

I guess it is true... you get what you pay for.
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Old Apr 25, 2006, 1:25 AM   #17
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i'm pretty sure you can get the 18-70 for maybe even 100 cheaper than retail prices. dam, if my 28-85 would only cover the 18+ i would sell my 18-70. I'm also looking for a better wide angle, a wide angle prime for no more than $100, and I want to sell my 18-70 for this (i would prolly get $50-70 i think on ebay since its not new).
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