Notice to customers using Sigma’s EO-ETTL II type flashguns

Notice to customers using Sigma’s EO-ETTL II type flashguns
Sigma’s 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 do not operate roperly with Canon EOS 50D D-SLR camera. To overcome this, we will start supplying a free-upgrade service to our customers today.
Please notice that this problem occurs with the EOS 50D D-SLR camera only.

We deeply apologize for any inconvenience this may have caused to our customers.

Upgrade will be required to overcome the following problems:
 

  1. The Autozoom function does not work properly.
  2. Exposure is not correct.

List of flashguns requiring update

ELECTRONIC FLASH EF-530 DG ST EO-ETTL II             Serial Number lower than 1047200

ELECTRONIC FLASH EF-530 DG ST EO-ETTL II             Serial Number lower than 1045700

ELECTRONIC FLASH MACRO EM-140 DG EO-ETTL II   Serial Number lower than 2054400

ELECTRONIC FLASH EF-500 DG SUPER EO-ETTL II

* This update service is only possible if the flashguns’ back panel shows EO-ETTL II marking.

ELECTRONIC FLASH EF-500 DG ST EO-ETTL II

* This upgrade service is not available if the flashgun does not support EO-ETTL-II. (They are marked only “EO-ETTL” or “EO” on the back of the body).

 Products shipped after today already include this updated firmware. The following sticker is put on the gift box of compatible flashguns.