I am curious to know if there is enough user history with the unusual dual mechanical/electronic FM3a shutter for a consensus on the reliability of the FM3a after extensive field use. From a multitude of user reports and fans over time, it is safe to say that the aluminum FM2n shutter is legendary in reliability, but I have not been able to find reports of the more complex FM3a shutter reliability after extensive use. It is a more modern but limited production run with less users than the FM2n, and the advent of the DSLR didn't give it a chance. Has anyone given the FM3a a physical or environmental beating over an extended period of time? If you are a fan of the FM3a, the situation below is intended to challenge you: Suppose you are out on a career dependent assignment in remote outdoor locations for one year in which the temperature will become very hot/dry and very wet/cold in season, and you are offered a clean lightly used FM2n or a FM3a for the task, given lenses of your choice, tripod, unlimited film, but only one battery in the chamber, and expected to use the selected camera in mechanical unmetered mode when the battery eventually dies without replacement. Unless I stand corrected about the FM3a, you will be able to create automatic exposures lasting several minutes as long as the battery works. At the end of the year, failure to succeed with interesting images will let you down in a personal way. Which camera would you select, and why?