Notice to end-users of EF-500 DG Super Pentax and EF-500 DG ST Pentax flashguns.
2006.7.31
To our valued customers,

Sigma's EF-500 DG SUPER and EF-500 DG ST model flashguns for Pentax mount do not operate with the recently introduced Pentax K100D digital SLR camera. To overcome this, we will start supplying a free-upgrade service to our customers today *.

We regret any problems this may cause our customers who own a Pentax K100D camera and we will take all necessary steps to minimize any inconvenience.
  • This problem occurs with the Pentax K100D digital SLR camera only.
  • List of flashguns requiring update for the Pentax K100D digital SLR camera:

    EF-500 DG SUPER Pentax fitting
    EF-500 DG ST Pentax fitting

    * Update service is not available for the non-DG version (EF-500 Super Pentax fitting and EF-500 ST Pentax fitting) of above flashguns
* It is not possible to give this service for flashguns with a serial number lower than 8000000.
We will continue to provide an update service for flashguns with serial numbers higher than 8000001.
For further information, please contact your nearest authorized Sigma Service Station.
For further information, please contact your nearest authorized Sigma Service Station.
http://www.sigma-photo.co.jp/english/network/index.htm
We will post further information regarding service procedure and time-scales in due course.
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