I still remember that the AF-360FGZ flash was first marketed with my ten-year old MZ-S, which was the first P-TTL flash unit of Pentax and also with the High-Speed-Sync (HSS) function, back to 2001. Four years later, Pentax made the AF-540FGZ, being more powerful with a high Guide Number and also a swivel head. After that, there is no update to those major flashguns of Pentax.
At the same time
