The latest version of the Pentax 645 medium format lens lineup is from February 2017 and it lists a total of 16 lenses – half of those lenses are now discontinued: smc Pentax-FA645 33-55mm f/4.5 AL smc Pentax-FA645 45mm f/2.8 smc Pentax-FA645 45-85mm f/4.5 smc Pentax-FA645 55-110mm f/5.6 smc Pentax-FA645 150-300mm f/5.6 ED [IF] smc … Continue reading Half of the Pentax 645 lens lineup has been discontinued