I've just scanned four old slides. I'm quite pleased with the result, but seeing as these slides are relatively old, probably mid 70's, there is a lot of grain in them. When I scan I scan at max resoltuion which gives me about 100 mb pictures. This is a lot concidering that there is loads of grain viewable. So I was wondering if there is a program out there which I can run my photographs through which will check grain size and chose a suitable resultion for the photograph.