Sigma’s lenses for Sony mount may have a potential aperture operation problem when used with the Sony α33and α55 Interchangeable Lens digital cameras. To overcome this issue, we will be offering, free of charge, a modification service to our customers who have purchased a Sonyα33and α55 and own current Sigma lenses for Sony mount. This phenomenon will only occur with Sony α33and α55 cameras. Future production of Sigma lenses will be fully compatible with these cameras. We deeply apologize for any inconvenience caused to our customers.
When shooting with a Sony α33and α55 cameras, the aperture may not work properly and a “camera error” message will be displayed on the camera.
[Lenses requiring the modification]
All current Sigma’s lenses for Sony mount.
*For discontinued lenses, a modification may not be available.
[Support for this issue]
We will be offering a modification service for our current range of lenses free of charge.
[Mark for compatible lenses]
Future production of Sigma lenses will be compatible with these cameras. The following sticker is put on the gift box of compatible lenses:
For further information, please contact your nearest authorized Sigma Service Station: