That "L" lens "look" - Canon v Sigma 35mm1.4

Started Apr 22, 2013 | Discussions thread
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gatorowl Senior Member • Posts: 1,135
Re: Add QC to the list

rpiotr01 wrote:

Now that real world samples are making their way into buyers hands, more and more reports are coming out about continued QC issues at Sigma with AF reliability. Seems the same thing that pops up so often in the 50 1.4 is happening in the 35 1.4 as well. Makes one wonder if Sigma is pre-screening all the lenses they send out for review to make sure they're all perfect.

And please note, I'm not Sigma bashing, I have the 50 1.4 and have nothing against them. I just don't like that they're able to produce a wonderful lens but won't put the QC protocols into place that will assure that almost every one on the shelf is top notch. I'm in the market for a fast 35mm lens and I'm loathe to pull the trigger on the Sigma because of this.

Can you be more specific?  I'm yet to see a report of problems with this lens. And even though it would be nice to have almost every lens on the shelf be perfect, I don't think very many of us would be willing to pay the price of maintaining a standard that almost no manufacturer meets. Also, some  merchandise is damaged in transit, which is often (not always) beyond the control of the manufacturer.

Now, I agree that QC is a problem if 20-30% of a product has problem.  Hell, even 10-20% may be too high.

So, what percentage of Sigma 35mm 1.4 lenses do you believe are defective?

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