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The following is an unedited press release, shown as received from the company represented. We've elected to present selected releases without editorial comment, as a way to provide our readers more information without further overtaxing our limited editorial resources. To avoid any possible confusion or conflict of interest, the Imaging Resource will always clearly distinguish between company-provided press releases and our own editorial views and content.

Sigma logo. Click to visit Sigma's website! PRESS RELEASE: Auto focusing issue affects limited number of Sigma telezoom lenses


After thorough investigation, we have ascertained that some APO 50-500mm F4.5-6.3 DG OS HSM, APO 120-400mm F4.5-5.6 DG OS HSM and APO 150-500mm F5-6.3 DG OS HSM lenses, produced recently, may have a potential autofocus defect.

This issue could possibly occur in some lenses within the following range of serial numbers.

List of lenses requiring the modification
APO 50-500mm F4.5-6.3 DG OS HSM Serial Number between 10633051 and 10972000.
APO 120-400mm F4.5-5.6 DG OS HSM Serial Number between 10574001 and 10972000.
APO 150-500mm F5-6.3 DG OS HSM Serial Number between 10674301 and 10972000.

This is a limited problem that will not occur in any lenses other than those specifically listed above.

Support for this problem
To overcome this issue, we will be offering our customers an inspection and where applicable, a modification service, free of charge. In the case of any autofocus problem becoming apparent on inspection, we will rectify the situation through our local authorized Sigma Service Stations.

We deeply apologize if any inconvenience has been caused to our customers.

For further information, please contact your nearest authorized Sigma Service Station.
http://www.sigma-photo.co.jp/english/network/index.htm


(First posted on Wednesday, June 16, 2010 at 17:12 EDT)

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