Canon has issued a firmware update for the EF 40mm f/2.8 STM lens.
Firmware Version 1.2.0 addresses the following phenomenon.
1. If pressure is applied to the lens barrel while the lens is mounted to the camera (pressure can be applied even while attaching the lens cap or while carrying the camera with the lens attached in a bag), the autofocusing function of the lens may stop working.
Note that only the following cameras can be used to install the update: [Read more…]