I bought a Nikon D750 during the 2017 Black Friday and the camera is just out of manufacturer warranty. I am having a weird issue with my Nikon D750. With the original 24-120mm Nikkor lens, I am seeing two issues.
- AF-C to AF-S selector is not working at times.
- When it does not work, I see that back button focus is also not working.
After several attempts, I was able to figure out that the lens was not mounted properly in these cases. Whenever I mount the lens and if I hear a click sound, everything seems to work fine. Sometimes, when I mount the lens, I do not hear the click sound and in such cases the AF-C to AF-S selector and the back button focus are not working. It is not just with the 24-120mm lens. I have a Yongnuo 50mm f/1.8 lens and a Tamron 28-300mm lens and I am seeing these problems with these lenses also sometimes.
I usually purchase extended warranty for high-value items, but unfortunately I missed to do it for my Nikon D750.
I am looking for some solutions or ideas to overcome this.
Can someone help?