Recently picked up a used N80, it appears to be in good shape, but I'm rather dissatisfied with the results from my first roll. The pictures that I underexposed (by .5 EV) look terrible. I'm hoping the camera just needs to be cleaned, there is visible dust, so I know that's at least part of it. Any ideas as to what happened? Film is Fuji Superia 100, link to samples below.
http://www.pbase.com/jdepould/35mm