Busted mount ring

This is with the Sigma 24mm? If this is with the Nikon 24mm AF-D or another lens with an aperture ring then turn the aperture ring to its smallest setting (largest f/number) and control the aperture from the camera body the same way as with a lens without an aperture ring.

If it really is with the Sigma lens, try cleaning the contacts on the back of the lens and in the lens mount on the camera body.

The nikon d80 you pointed out is a solid good camera. Id suggest buying it, if you are sure your lenses fit, didnt bother to check But I know Nikon is the way to go!

If the lens you're using has an aperture ring, turn it to its smallest setting (largest f/number). You can control the aperture from the camera body, the same way as on a lens without an aperture ring.
If the lens does not have an aperture ring, try cleaning the electrical contacts, both on the back of the lens and in the lens mount on the camera body.

Tokina makes their lenses with a variety of mounts. A lens with Canon mount, for example, won't fit onto a Nikon. Assuming you get the lens with a Nikon mount, then yes, you can use it with a D70 and with a D700.

nothing is wrong with your lens. when you mount the 80-200 make sure the aperture ring is set on the highest f-stop (F22 or F32). there is a small lock that will lock the aperture ring in this position. if the camera thinks the ring is not in the "highest" "F" position you will get the error.

Thanks for the additional info.

First, an apology: I misread the lens description, sorry. If you have the "AF 70-300mm f/4-5.6 ED Nikkor" then the lens DOES have an aperture ring at the rear of the lens. If this is the case, then your D50 is compatible and all you need to do is turn the aperture ring on the lens until it's at the minimum f32 setting. The "FEE" message on your D50 should then vanish. When set this way, you control the aperture setting on the lens via the camera body controls. The command wheel alone adjusts the aperture when in Aperture Priority mode, and in Manual or Shutter Priority modes you need to first press the " /-" button behind and to the right of the shutter release before using the command wheel. There's even a handy little printed icon of a lens diaphragm to remind you of the secondary function of this button.

If your lens model is the "Nikon 70-300mm f/4-5.6G" then like a G lenses it lacks an aperture ring and so can only be controlled by Nikon bodies which operate the aperture from the body alone, like yours. So if you're getting the FEE error with a G lens then there's most likely a common fault which occurs with Nikon bodies with a small switch beside the lens mount. In the picture (courtesy and copyright of Digital Photography Review), the switch is at the 8 o'clock position.


This switch is activated either when a non-G lens aperture ring is turned to the smallest setting or when a G lens is correctly mounted. It is possible for the G lens to be damaged in such a way that the switch doesn't get activated but it's rare. If the switch is broken the camera body will need a repair.

Hope this answers your question, but if not add further comments. If it has answered your problem then please let me know by rating my reply.

Sounds like the coupling pin on the body is missing, Try a diff auto focus on the body, If it still does it then I believe that\'s the problem, On the body next to the lens mount, About 7 o clock there should be a lever that couples with the lens when is is at f22 or larger

Plastic next to the mounting ring, brass on top

If lens has aperture ring, set to min aperture before mounting (f22 etc)
With heavier lenses it is not so easy to tell when lens clicks in all the way to mount, Lens wont autofocus if not clicked in to mount just so. Also both camera and lens should be set to AF.

The FEE display means that your lens aperture ring is not set to the F/22 or F/32 ( whichever is at the end of the rotation ). Mount the lens on the camera, then rotate the aperture ring all the way toward the highest number ( 22 or 32 ). If your lens has no aperture ring, the post on the body at the 8 o'clock position of the lens mount is probably broken. It has to be replaced by a repair shop.