After thorough investigation, Sigma Corporation have ascertained that auto focusing does not work properly when some Sony fitting Sigma lenses are used with Sony α77 and α65 interchangeable lens digital cameras. To overcome this, Sigma Corporation will be supplying a free update to theirs customers. This phenomenon will only occur with the combination of any lenses listed below and the Sonyα77 or α65. Future production of Sigma lenses for Sony fitting will be fully compatible with these cameras.
Sigma Corporation deeply apologize for any inconvenience caused to their customers.
Auto focusing does not properly function when shooting with a Sony α77 or α65 camera.
[Lenses requiring the modification]
- 10-20mm F3.5 EX DC HSM
- 17-50mm F2.8 EX DC OS HSM
- 17-70mm F2.8-4 DC MACRO HSM
- 17-70mm F2.8-4 DC MACRO OS HSM
- 18-50mm F2.8-4.5 DC OS HSM
- 18-125mm F3.8-5.6 DC HSM
- 18-250mm F3.5-6.3 DC OS HSM
- 50-200mm F4-5.6 DC HSM
- 4.5mm F2.8 EX DC CIRCULAR FISHEYE HSM
- 10mm F2.8 EX DC FISHEYE HSM
- 24-70mm F2.8 IF EX DG HSM
- APO 50-500mm F4.5-6.3 DG OS HSM
- APO 70-200mm F2.8 EX DG OS HSM A
- PO 120-400mm F4.5-5.6 DG OS HSM
- APO 150-500mm F5-6.3 DG OS HSM
- 50mm F1.4 EX DG HSM
- 85mm F1.4 EX DG HSM
[Support for this issue]
Sigma Corporation will be offering firmware update service for above lenses free of charge. Please contact your nearest authorized Sigma Service Station for further details.
[Indicator for compatible lenses]
For further information, please contact your nearest authorized Sigma Service Station.