Auto focus issue

I have a FujiPix S3 with a Tamron 90mm macro af lens
I shoot intra oral photos and have always used manual focus
All of a sudden it started auto focusing and I have no idea why or how to stop it
I slide the ring on the lens to MF and it still does AF
Can any explain how to get back to manual focus?
Is this a function of the camera or the lens?
Thanks for your help
Mark
I shoot intra oral photos and have always used manual focus
All of a sudden it started auto focusing and I have no idea why or how to stop it
I slide the ring on the lens to MF and it still does AF
Can any explain how to get back to manual focus?
Is this a function of the camera or the lens?
Thanks for your help
Mark

If you look at the camera from the front, there is a switch on the right of the lens that says M S C. You need to make sure that's switched to M for manual focus, as the other 2 mean Single and Continuous, which are both AF. If it's a lens problem, someone else might be able to help.
https://www.dpreview.com/reviews/fujifilms3pro
https://www.dpreview.com/reviews/fujifilms3pro