I've tried various fixes I've seen on the internet (cleaning contacts, remove/set/replace lens, etc) excluding a factory reset of the camera without anything working to solve the issue. I don't recall the entire number from the lens, but it's an autofocus film camera lens, it is a DX Nikkor 2.8 lens. Zoom is from 70-200. I bought it (used) a couple months after I bought my D50 about 6-7 years ago. Until my most recent trip, it worked with the camera flawlessly. In the past, the only issue with the camera or the lens has been when I had accidentally clicked the f-Stop off the position where it is locked (f22), which was corrected when I removed, set to f22, locked it & remounted the lens. Since the lens stays in its case when not attached to the camera, I simply carried it with me on a recent trip & did not check it out before I left. When I connected the lens, it presents the fEE error, which I believe is that the camera & lens can't see each other. After removing, setting, locking and remounting the lens a zillion times, it still won't work - it keeps showing the fEE error. The kit lens (18-55 Nikon lens) works fine with the D50. The 2.8 DX lens works perfectly when it's put on a D90, which should rule out the lens being the issue. Mounting the lens on the D50 after its been on the D90 still doesn't clear the fEE error. Naturally, a new $2000, digital 70-200 zoom lens works perfectly on the D50. Although the lens has been a boat anchor to carry around (especially now), the reason I decided on the D50 was that it was one of the few Nikons (at the time) that'd use both film and digital lenses. And, a good, fast lens like this one was relatively cheap especially when compared to the comparable digital lens costs (then and now). I've done the following to try to correct the issue, all without success. 1. Cleaned the contacts on both the lens & camera. 2. Removed the lens, set to f22 & locked, remounted. 3. unlocked, set to various f stops, mounted, removed, set to f22, locked & remounted the lens 4. Mounted the kit lens first (no error), then did steps 2 and 3 again I've also seen a couple Youtube videos where something was "held" on the camera (at the 8 o'clock position) that would allow it to see the lens. However, on my D50, all I see is a cavity there - there's nothing protruding from the face of the camera. On the DX lens, I have the tab there also, that appears to be completely intact. I would estimate the tab on the lens to be approximately 1/4" or slightly less in width, and maybe 5/16" in height from the mounting face of the lens. Any pictures online I can find of the face of the D50 or a similar lens are not detailed enough for me to determine if there is an issue with my D50 or my lens. I have a ticket in with Nikon, but since the camera is 6-7 years old, I know it's an out-of-warranty repair (if it is repairable). As of yet, the ticket hasn't been opened. I take meticulous care of the camera - it is either out taking pictures or is in the case, and is not subjected to extreme temperatures, weather or dirt. The lenses are either on the camera or capped and cased and aren't subjected to extreme temps, weather or dirt. Outside of a recent case of a considerable amount of swearing, they haven't even been verbally abused. I have avoided making any permanent modification to either piece, but am running out of options. Replacing the lens is cost prohibitive. Any ideas as to how I can resolve the fEE error?