Problem with Tamron 70-300 VC

[dizidav]

I have a focus problem with my Tamron SP 70-300 Di VC,on a D7100, it will only lock focus occasionally, bit strange as it is fine on my D60 and D5000, only happens on my D7100, anyone had similar problems or can suggest a possible cause.

 

[Al1944]

Dirty contacts on camera?

 

[dizidav]

Checked the contacts, all look OK, the camera works fine with the other lenses just a problem with the Tamron, most strange.

 

[arclight]

The sort of problem that could have you running round in circles.
Have you just got that lens or did it previously work OK on your D7100 ?

 

[dizidav]

I have had the lens for a while now but never used it on the D7100, first time the other day, I have been reading through the manual, in case there was some setting I didnt know about, with no result, perhaps do a factory reset on the body and see whet happens.

 

[rpsmith79]

What do you mean by locking focus?

Also, what focus mode is your D7100 set to, single (S) or continuous (C) AF, as if it's set to C it will be continuously tying to focus while ever the shutter (or BBF) button is pressed

 

[dizidav]

What do you mean by locking focus?

Also, what focus mode is your D7100 set to, single (S) or continuous (C) AF, as if it's set to C it will be continuously tying to focus while ever the shutter (or BBF) button is pressed

After checking I found it was on AFA, so reset to AFS, seems OK now, at least on static subjects, ie. neighbours houses, will see what it does tomorrow when I'm out.