D90 and Nikkor 17-55 problem. Lens won't come off

This lens is compatible with your Nikon D90 according to this site:

http://lenshero.com/lens/Tamron-14mm-f2.8-IF-Nikon-f-lens

Your complaint "does not work" is rather broad, so I don't know what specific kind of problem(s) your having with it.

If you continue to have issues with it, make sure other lenses work on your D90 to eliminate the body as the source of the problem. Consider performing a 2 button reset on the D90 (and resetting any other customized settings to defaults) and try again. If it still "doesn't work" then contact Tamron to evaluate the lens for possible repair.

Good luck!

One of the best portrait lenses for the Nikon D90 is the Nikkor 50mm f/1.8 lens which can be found here: http://www.amazon.com/Nikon-50mm-Nikkor-Digital-Cameras/dp/B00005LEN4/ref=sr_1_1?ie=UTF8&qid=1298955171&sr=8-1. At low f-stops the lens blurs the background beautifully and will really make the pictures of the kids pop. An added plus is that it can take great photographs in low-light situations. It only costs $125 as well.

That's the Nikon error message for a lens with aperture ring set to something other than the minimum (i.e. highest number).
The camera insists on controlling the aperture ring, and to do so, the ring must be set to the minimum setting.
Unless it is a "G" lens, which has no aperture ring whatsoever.
The camera body sets the aperture of the lens wide open while auto-focusing, and displaying through the viewfinder. When it comes time to flip the mirror up and take a picture, the camera dials the aperture to the setting you (or the camera) have selected.

This is a common problem with this camera/lens conbo. I "solved" it by removing the lens, then reinstalling it - but hold the lens release button down, and rotate the lens a nuber of times (in the camera body) before releasing the button. It appears that the issue is poor electrical contact between the lens and camera body. If there is a poor contact, the camera will not know if thereis a focus and will lock the shutter release. With this poos contact, the camera will only fucntion in manual mode

Hope that this helps

Try it with another lens on the body and try the lens on another body to see which one is faulty

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Thanks

Make sure you set the aperture ring on the lens to its smallest setting (largest f/number) and lock it. Without doing so, the lens will not communicate properly with the camera and thus you will not get the autofocusing.

Try a diff lens on the D90 to see if its the body or the lens. Tony

You "release the shutter" by pressing the shutter release button, often called the shutter button. That's the button you press to take a picture :-)

The camera may or may not return to normal after that. If it doesn't, remove the battery, then put it back in and turn the camera on again. Try removing and reattaching the lens (with the power off). If the problem persists, have a certified Nikon tech look at it.