Firmware update fixes Canon 40mm pancake lens focus failure

Canon has released a firmware update to its recently announced 40mm pancake lens to correct an autofocus failure that occurred on some models.

On versions of the Canon EF 40mm f/2.8 STM lens with serial numbers beginning with 0, 1 or 2, users experienced autofocus failure when pressing on the lens barrel while the lens was mounted to a Canon camera.

Canon has launched a firmware update to correct this issue.

Canon states that the update only applies to those lenses with serial numbers beginning with the digits above because lenses with other serial numbers are already equipped with the update.

To apply the new Canon firmware update, Canon users will need access to either a Canon EOS-1D X, Canon EOS 5D Mark III or the Canon EOS 650D / Rebel T4i with the lens mounted directly to the camera (ie any extenders removed).

Canon photographers who don’t own these cameras but wish to have the firmware of their lenses updated are asked to contact the company’s service counters.

The new firmware can be downloaded here.

Via: Imaging Resource

This entry was posted on Tuesday, August 28th, 2012 at 11:25 am and is filed under News. You can follow any responses to this entry through the RSS 2.0 feed. You can skip to the end and leave a comment. Pinging is currently not allowed.