My photos show up with a lot of noise even with a low ISO?

So I have a Nikon D70s camera with a Nikkor AF 24-120 mm 1:35.5.6D lens, and the photos I take with it have a considerable amount of noise, even at an ISO of 200. The image quality is set to JPEG Fine (I think it's the largest before going into RAW), the image size is set to large (3008x2000). Anything I'm doing wrong? Any advice or change of any setting would be greatly appreciated! Thanks for your help and God bless.

Here's an example: ISO 100; shutter speed 1/250; focal length of 120mm; f 8.

It's hard to tell with a smaller image, but it looks more like a focus issue than noise.

Are the images sharp? Try taking a picture of a pole, or something like that, see if it's in focus, or if your focus is off. The other is to try manual focus, and see how that looks.

If it is a noise problem at ISO 200, then there could be something wrong with sensor. I have a D70s, and it got noise at ISO 400-800, and bad at 1600, but 200 was always good.

Also, if you're shooting flowers and such, it could be too close for focus, that's where your focus problem might be.

The settings can be reset to default, try that, and then change file size to large JPEG.

Is this recent? Up until now has your 5 year old camera performed better than what you are experiencing now?

I looked at other images you have posted and there does not seem to be as much apparent noise in them

Subjects with hard edges seem to be relatively noiseless, yet the closeup of the flower in your like has a mottled look to it and yes has some noise.

So much has happened technologically, that you may want to consider looking a new camera. Even a good used D300 will provide you will less noise.

Sample shot from the D300 at 3200 ISO

The only way to tell is by seeing the original unedited/uncropped image.

It's hard to say exactly what is going on without seeing your EXIF data but my guess is that the images are fairly underexposed. Early APS-C Nikon dSLR cameras were very sensitive to underexposure. Try over exposing just a bit and see if that helps.