http://www.pentax.com/en/pentaxhistory/archives/
http://s1.media.ricoh-imaging.de/media/7542ab0e4610697f54bd87b2ce2c343e/poster_A1_slr_cameras1952_2017.pdf
Amongst the above, I bought 15 models over years.
So, for my 15 Pentax interchangeable-lens bodies, they can be further categorised as follows:
- 4 Film and 11 Digital
- 2 Medium Format, 4 135 Full Frame, 8 APS-C, 1 Tiny Sensor Format
- 14 Reflex and 1 Mirrorless
- 1 Silver, 1 Oliver, 1 Blue, 1 Gold and 1 White, all Others are Black in Colour
- 10 models can take AA batteries, 4 with adaptors or with grips (which were bought separately at high prices)
- Total cost of these cameras when bought new was huge, present value is minimal! :-(
After all, I must admit that I am a true Pentax fanboy, who bought and supported the brand blindly, over decades! :-((