Sigma/Sony a33/55 problem

[Mark Burgess]

I am thinking about buying a Sony a33 and treating myself, as well, to a ‘Bigma’.

But here is the Sigma site:

Sigma’s lenses for Sony mount may have a potential aperture operation problem when used with the Sony α33 and 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 Sony α33 and α55 and own Sigma lenses for Sony mount.

This phenomenon will only occur with Sony α33 and α55 cameras. Future production of Sigma lenses will be fully compatible with these cameras.

We deeply apologize for any inconvenience caused to our customers.

[Phenomenon]

When shooting with a Sony α33 and 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 lenses discontinued several years ago, a modification may not be available. For further details, please contact your nearest authorized Sigma Service Station.

[Support for this issue]

We will be offering a modification service for our current range of lenses free of charge. Please contact your nearest authorized Sigma Service Station.

It seems a good idea to wait until this is sorted out (or until suppliers discount non-compatible lenses which Sigma will fix for you). Most people I know have at least one Sigma in their kit; if the a33 and a55 take off, Sigma service centres could be overwhelmed.

And I don’t like “For lenses discontinued several years ago, a modification may not be available.”



(Apologies if this is general knowledge and I’m the last person to know)