I mounted my classic old 55mm f/1.2 that originally came on my Nikon F2A film camera in the 1970's on my D300s digital body. I don't recall the exact aperture but I wanted to get a bunch of bokeh so I was probably at f/4.0 or f/2.8 with a 2000th sec shutter speed. If I did it all over again I'd try it at f/1.2 with up to an 8000th sec speed to see what would happen.
I've noticed recently that Smug Mug/Flickr seems to have added a new feature to the photo display. In the past I think I could click on a photo once and get some enlargement but now they've got a 2-phase click to enlarge - at least on my computer. Give it a shot. Click twice on the globe statue on the right for details. This will work on pics posted in fairly large format but probably not be noticeable for stuff posted at smaller sizes such as 1024.