Canon Zoom Lens EF 24-105mm f/4 L USM
Received Error 01 12/29/2017.
Sent to Canon for repair on 2/5/2018.
Received flat rate repair estimate of $344.30 on 2/8/2018.
Contact of the power diaphram assembly was faulty and was replaced along with the rubber mount, L indicator ring and straight guide keys. Lens focus was adjusted, checked, cleaned and lubricated.
Received from Canon 2/13/2018.