So after shooting digital for a couple months I would really like to go back to film, even just part time, to improve my composition (selecting only the best photos to take instead of just snapping everything), metering skills (I have a meter but Id love to get to the point where its not as needed), and just because I like the medium a lot. I have inherited two fantastic SLRs from my grandfather- a Nikon F and a Pentax Spotmatic F- and I'd love to start taking them out with me whenever I go shooting, but I cant really focus through either of them. Its not because I can't hand focus because a good deal of the lenses I use with my D70 are manual (its a hell of a lot cheaper on ebay and craigslist). I've cleaned both meticulously with glasses cleaning spray and a soft cloth, but every still seems very hazy through the viewfinders. Is it that I just havent cleaned well enough? Is this normal with old cameras? Thanks for your help!