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10-24-2008, 05:12 PM   #16
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QuoteOriginally posted by Gruoso Quote
There is no need to mis-inform people - News: The Sigma Saga
here's some more concrete numbers - News: Lens Repair Data 1.0

10-27-2008, 06:33 AM   #17
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Some folks in Canon-ville complain about "bad copies" of lenses (even, gasp L lenses!), but I've had NO problems with my two Sigmas (10-20, 30), and four Canon lenses (17-85, 85 f/1.8, 70-200L f/4 IS, 100-400L)
10-27-2008, 07:42 AM   #18
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Wow, the numbers for Canon's popular wide and wide-normal zooms look really bad. Looking at the data referenced by Walter, I was struck by the following:

The Canon 17-55mm f/2.8 IS EF-S has an annual failure rate of 17.39% (versus an average of less than 5% for all lenses). Image Stabilization failure is one of the two major problems with this lens (ouch!), the other being Er99, a general code, often suggesting a problem with the electronics. This lens also has a reputation on the forums for collecting very large amounts of dust on the inside of the front element, as it is poorly sealed in the front and sucks in dust during operation. This is not an inexpensive lens.

The Canon 10-22mm EF-S, another popular lens, has a 15.79% annual failure rate. The main problem is barrel separation. Looking through sample photos on the web, it appears to me that there are quite a few samples of this lens with de-centering problems. (Sound familiar?)

I certainly don't want to be an apologist for Pentax. The QC problems--particularly with the 16-50mm--are certainly a cause for concern. But all major makes suffer from sample variation, and some of very popular lenses from other brands suffer from reliability issues as well.


QuoteOriginally posted by walter Quote
here's some more concrete numbers - News: Lens Repair Data 1.0
10-27-2008, 11:41 AM   #19
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yes, at least c

I sent my 20D and 40D in for focusing issues, as well as my 24-70 f2.8 L, my 24-105 f4 L (swapped 2 times for centering issues, sent in best copy 2 times for focusing issues), my 70-200 f2.8 IS L,

10-27-2008, 11:59 AM   #20
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On a slightly different angle, are repairs at Nikon or Canon significantly better than Pentax?

I keep reading about how people have been waiting 4+ weeks, and get their stuff back in the same condition...

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