I have used FM's for years. They are among the best, most reliable bodies ever produced by Nikon. You need to understand the nature of the meter, it is "cenre-weighted" designed to get the best results from black & white film, cutting out bright skylight from influencing meter readings. You may find with colour transparency, if you get round to using it, that it will benefit you to set the meter for about two thirds underexposure...i.e. a 100asa film to 160asa....this will give you richer colours and avoids slight overexposure, which often benefits black & white negative film, but not transparency