How to use Nikon-f lenses with Nikon D3100 camera?

I have a few older lenses with the first Nikon-f film camera, like the 1:14 55mm lens. I put them on my new Nikon D3100 cam, and they fitted perfectly, and I could see through them, but the camera said 'No Lens Attached'.Is there any way I can fix this so I can use these lenses?

If you want to use such older lenses, you need one of the Nikon dSLR's that are better than entry level, like your fine D3100 or D5100.

Here is a complete list of all the compatible Nikkor lenses

http://www.kenrockwell.com/...y-lens.htm

To possibly use that lens on your camera, you need to tell your camera you are using a NON-CPU lens. You will also need to use an external meter, since manually focusing lenses can't use the meter in your specific camera

Look on page 169 of your user manual

Those old lenses still fetch good money sell them and buy new ones designed for digital use

Just put your camera into manual. Modern Nikon lenses are "smart lenses" and transmit data to the camera. The camera is not recognizing the lens as being a smart lens, so it responds no lens attached.

However, the lens will still work with the camera, but you have to use manual exposure mode.

That also means you have to manually focus the lens, and to adjust the aperture ring on the lens to obtain the desired aperture you want.

When you put the camera into manual, to get the correct exposure, watch the exposure meter on your camera. Adjust the lens aperture on the lens, and shutter speed on the camera until the correct exposure is shown on the camera's exposure meter - then take the photo.

The D3100 uses a neutered F-mount which does not contain any of the required parts for the camera to function properly with a primitive lens.

Your lens will fit, but you won't get any metering because the D3100 depends on a CPU within the lens to for the meter to function properly. You therefore have to potential solutions:

1) Estimate the ballpark value, shoot a frame, then look at the histogram in the image preview to adjust your exposure appropriately.

2) Use a handheld light meter