Sigma Corporation is pleased to announce that firmware Ver.1.05 for the SD1 is now available for download.

SIGMA SD1 firmware [Ver.1.05]

Benefits of the firmware update

  • It is no longer necessary to run "Update Lens Information" to update the latest lens information.
  • Improved Auto Focus Accuracy.
  • Improved evaluative metering accuracy in backlight or low light conditions.
  • Fixed various bugs for more stable operation.
  • SIGMA SD1 firmware Ver.1.05 is available for download at the following site:

SD1 Special Site