latebloomer Loc: Topeka, KS

My D7100 will not autofocus. The focusing motor does nothing.

(It has worked fine since I got it 5 months ago) I have tried 2 different lenses (Tamron 16 -300 and Tokina 100 macro). I have both the body and the lens set to auto focus and hand-held. I also tried resetting the camera to original settings. The camera is Aperature Priority and Single Servo and automatic ISO. I have the camera set to Menu/Recent setting/AF-S Priority selection/Focus. Menu/Recent settings/AF Fine tune/Off. The battery is at 76%. I have made sure the lens release button is fully out on both lenses. Custom setting menu/Autofocus/AF-C priority selection/ focus. Custom setting menu/Autofocus/AF-S Priority selection/focus.

Important: When I put my Nikor AF 50mm 1.8 D (no motor in the lens) I can hear the motor adjusting the lens and also see the adjustment in the view finder.

Previously, I had changed some settings for Continuous Setting 1.

I have only used the camera in Aperture priority, shutter priority, and manual. I have not used full auto, effect, or program modes. I don't know if I ever will.

Does anyone have any suggestions on how to correct this problem?

Bret Loc: Dayton Ohio

Have you checked the AF-M lever on the side of the lens mount?

latebloomer Loc: Topeka, KS

Yes, I have the AF lever set to AF.

pith Loc: CA

It seems unlikely but try cleaning the contacts on the lens mount with a Q-tip, and a little alcohol. If that doesn't work it may be time to call Melville. :wink: pith

jerryc41 Loc: Catskill Mts of NY

So the motor makes noise but doesn't adjust the lens? It sounds like a physical disconnect between the motor and the lens - the little piece in the camera that moves the lens.

Member Rick Riggins does camera repair.

Architect1776 Loc: In my mind

Not sure what you mean by adjustment in the viewfinder. Do you mean focus is changing on the 50mm? Or is it the 2 non-Nikon lenses not working? Perhaps I am dense as some say but it is not clear which lens(es) is not working.

latebloomer Loc: Topeka, KS

I could notice and hear the camera motor on the 50mm Nikon. I am wondering if the piezo motor on the Tamron and Tokinas is so quiet that I was not hearing it. Also, the viewfinder seemed out of focus while the the live view when zoomed often seemed in focus. At this time the Tamron and Tokinas seem (?) to be autofocusing.

I must have not been very alert and "focused" on Sunday when I thought I had a problem. I think I may have been nuts. We had children and grandchildren over for celebrations on Sunday. As much as we love them, I wonder if their mother and I are the only people in the world whose children and sometimes the way they raise their grandchildren drives us nuts. I wouldn't want to live in a world without them. They do bless my life. If you have not had such things in your life, you are avoiding one of the major experiences of being human. ;-)

Thanks to all who tried to help with this problem. UUH is a really helpful place.

jerryc41 Loc: Catskill Mts of NY

First, make sure the viewfinder focus is adjusted (the diopter). There is a little wheel at the top right corner of the viewfinder. With the camera turned on, look through the viewfinder and make sure it is "awake" and there is some writing at the bottom of the viewfinder. Turn that little wheel until the focus is sharp. Forget about adjusting it for what you see through the lens. That's a different adjustment. Just get the writing at the bottom of the VF in focus.

Once you get that set, make sure the camera is set to Auto Focus. Focus on something near and then something far. That will tell you if it's working.

bbrowner Loc: Chapel Hill, NC

I once had this problem. I found that the lens was not completely seated properly. I found that after putting in the lens... by giving it a little jiggle in both directions... problem solved.

Hope this helps.

latebloomer Loc: Topeka, KS

Thanks to everyone. I had tried all of the remedies before posting the problems. The problem was my own lack of critical observation. I was not focused (Pun intended.)

DavidPine Loc: Fredericksburg, TX

Do you mean that you found your problem? I was going to suggest that you go to live view and see if it is auto focusing.