Article ID : 00021502 / Last Modified : 12/05/2012

SIGMA™ lenses are not focusing when shooting with an SLT-A77 or SLT-A65 camera.

Applicable Products and Categories of This Article

It has been determined that the following SIGMA lenses may not auto focus properly when used with an SLT-A77V or SLT-A65 camera:

  • 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
  • APO 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

Sigma is offering a free firmware update for their lenses to resolve this issue. Please visit the http://www.sigma-photo.co.jp/english/news/info_111014.htm website for complete information.