Thoughts on Trailing Curtain Sync
jsessoms002 at nc.rr.com
Fri Jul 2 16:53:47 EDT 2010
The K-10D and K-20D both allow you to set the on-board flash to trailing
curtain sync. How difficult would it be for them to make the hot-shoe
also fire on the trailing curtain when a non-dedicated "flash" is
E.G. like with a radio-sync transmitter or Vivitar 285HV? Dedicated
flash like the AF-540FGZ has its own circuitry to talk to the camera and
can be set to trailing curtain sync.
Is this something they could do with a firmware update?
Or is it something that would require radical hardware revision?
For that matter what do the dedicated pins on the Pentax shoe tell the
flash? I know what the big one in the center does, and it's obvious
which one is ground.
More information about the PDML