I have a 50mm F1.8 Nikon lens I bought used years ago. Compared to the 18-200VR lens on my D200 it seems to have a fogginess when I look through the viewfinder. I guess it has developed some dust or a film on the internal optics which I presume could be cleaned. Does anyone have any idea how much this would cost? I have a feeling a new lens might be the more economic option but any other suggestions are appreciated.
TIA
TIA