100-400mmL is not AFing anymore.

[Samsen]

100-400 is not AFing anymore.

All started abruptly few weeks back.

It was an intermittent problem at first. Sometimes back to focusing once I remove the lens from body and reattach or play on / off with AF switch.

Camera doesn't seem to be the issue as it act the same with few other camera bodies too.
Before this I was able to manually focus at all rang but now I cannot focus anything farther than 5meter even manually. That is less than 5 meter, focusing ring rotates manually but gets stock at 5 meter and wont move any farther.

Any thoughts? 

[p4pictures]

Sounds like a job for service to be honest. You appear to have a repeatable problem that moves with the lens.

Brian

[Samsen]

Thanks.

I thought so.

Any guess as to how much it should cost me? if there is anything such as flat service rate?

[p4pictures]

Not sure for the costs, probably best for service to answer that one. Though to be honest I've mostly been pleased with the prices of service repairs.

Brian

[Michaeldigital]

Mine was not auto focusing about 7 or 8 years ago cost was $300+. That was was minimum repair cost then.