One of my lens is having a problem with the AF. But I still can shoot using the MF. Could this because of sand trapped in the lens?
If I want to check it to the service centre, how much will it cost? Anyone knows?
how about trying to turn the AF pin-hole on your lens by yourself? Maybe worn out? Or remove the 4 screws and take a peep on the gear inside? :think:
I tried before.... but all these just my suggestions at your own risk ;p
You can call up KM and ask for estimated price on servicing...