I have a Nikon D3100. The zoom ring on the lens that came with the camera is stuck. The lens is a AF-S NIKKOR DX, 18-55mm. Is is broken, or just stuck and is there anything I can do "unstick" it. Wondering if somehow it is locked.
Best option : Get it serviced from an expert.
Risky option :
I had a similar experience with my Nikon D3100. The camera fell slightly. The zoom was stuck about mid-way. I could not zoom any further. After having a heart ache, I held the lens and slowly turned, did not work. Then held tightly and it worked. I dont know what had happened, but things came back to normal. I have been using it in that condition for past 6 months and am careful not to do things v fast. Zoom works good, focus is good.
I think, in my case, the issue is, the fall broke one of the gear teeth and when I give it a little push, the gear continues its motion.
I also had the same problem. My camera fell on a hard ground, and the zoom was also stuck.
I opted for the risky option, forced it... and I somehow managed to unlock it. This might not work for your lens though... It could break it as well.
I am not sure if it's related, but I noticed afterwards that some of the blades were separated from the diaphragm, and free. I changed my lens soon after. Besides, I remember that the zoom was a bit harder than it used to be, sometimes getting stuck, and I was feeling some kind of resistance as I was zooming.