I have been a D300 owner for many years and have a vast collection of images and all my 'keepers' are sharp and hi res, in my opinion.
Perhaps if you could explain in more detail the reasoning behind your request it may assist.
I say this because every picture will have been taken at different settings, focal lengths and with different lenses. The images posted may have also had some post work done to 'enhance' their appearance.
I don't expect you will be able to critically evaluate images sized for the web. Web sized images are downsized from the native image. And the type of post processing can significantly change the apparent sharpness.
Most of the images on my website are from the D300. I've taken almost 90,000 images with a pair of D300's. It's an excellent camera.
Tue 14-May-13 09:45 AM | edited Tue 14-May-13 09:45 AM by Lunastar
Eric is right about web images and their sharpness. D300's are great cameras with a very capable sensor. It's arguably still the best sports/action/wildlife DX body. I'd say 95% of the images on my site were captured with D300's as well.
I mainly would like to use it for portraits/fashion.. I see some pros in this area with really sharp pictures which I assume were taken on the latest and greatest DSLRS, and i'm just wanting to see how the d300 might stack up to this.
If you're doing studio work and you know how to frame the subject and control the light, then, aside from the file size, you should be able to make the D300 image indistinguishable from that produced by any latest/greatest body. But you're already working with film so you know not to underexpose and to avoid substantial cropping. Bring those skills to the D300 and you will be rewarded with first class images. Just be aware that on a per-lens basis you will need to position yourself that much further away from your subject to get the same view.
In the linked gallery ten of the fifteen images were taken with the D300. You might be able to get a sense of the camera's versatility. And don't forget the lens, and the lighting, and the post-processing, and, and, and...