I note the list on Minox 35 models from 1974 through 1998. Can someone differentiate the specifications and features through the years for me? Are any (all?) "coupled rangefinders" that one focuses by superimposing two viewfinder images? Which of these have "match-needle metering" [a non-automated exposure mode] similar to the Nikkormat FTn I faintly remember from my early years.