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Sigma Fixes Its Flashguns by Offering Free Upgrade

In a press release, Sigma has announced

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In a press release, Sigma has announced that their EF-530 DG SUPER EO-ETTL II, EF-530 DG ST EO-ETTL II, EM-140 DG EO-ETTL II, EF-500 DG SUPER EO-ETTL II and EF-500 DG ST EO-ETTL II flashguns don’t operate properly with Canon EOS 50D D-SLR camera. To overcome this, they are now offering a free-upgrade service.

Upgrade will be required to overcome the following problems:

  1. The Autozoom function does not work properly.

  2. Exposure is not correct.

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