2 added 6 characters in body
source | link

I have a Sigma 12-24mm f/4.5-5.6 which I am very happy with.

I have a Canon 5D MkIII body.

The lens will focus normally, then after a certain amount of time will stop focusing. To force it to start focusing again, one must remove the lens and attach it again - then will work normally until it stops autofocusing again (maybe 30secs - 1 minute.

On other Canon bodies (not 5D MkIII) the lens works normally and I have no problem with other lenses on the body.

Any advice would be appreciated.

I have a Sigma 12-24mm f/4.5-5.6 which I am very happy with.

I have a Canon MkIII body.

The lens will focus normally, then after a certain amount of time will stop focusing. To force it to start focusing again, one must remove the lens and attach it again - then will work normally until it stops autofocusing again (maybe 30secs - 1 minute.

On other Canon bodies (not MkIII) the lens works normally and I have no problem with other lenses on the body.

Any advice would be appreciated.

I have a Sigma 12-24mm f/4.5-5.6 which I am very happy with.

I have a Canon 5D MkIII body.

The lens will focus normally, then after a certain amount of time will stop focusing. To force it to start focusing again, one must remove the lens and attach it again - then will work normally until it stops autofocusing again (maybe 30secs - 1 minute.

On other Canon bodies (not 5D MkIII) the lens works normally and I have no problem with other lenses on the body.

Any advice would be appreciated.

1
source | link

Glitching Autofocus on Sigma Lens

I have a Sigma 12-24mm f/4.5-5.6 which I am very happy with.

I have a Canon MkIII body.

The lens will focus normally, then after a certain amount of time will stop focusing. To force it to start focusing again, one must remove the lens and attach it again - then will work normally until it stops autofocusing again (maybe 30secs - 1 minute.

On other Canon bodies (not MkIII) the lens works normally and I have no problem with other lenses on the body.

Any advice would be appreciated.