Hi,
I got a 645z and the LS 135 lens. I am trying to get the High speed sync working reliably, anything above 1/60th! Unless I am badly mistaken, I tested the lens at all speeds and everything worked, at least once! Unfortunately, the exif information shows "F--" for shutter speed, so I can't go back and see that I wasn't just dreaming about it working at 1/60th, 1/125th, 1/250th, and 1/500th.
I made sure the camera was set to "single frame shooting". According to the LS135 manual, the 645 automatically sets the cameras focal plane shutter to 1/8th, I switched out of LS mode and set the cameras shutter to 1/8th. I cock the lens, take the shot. 1/60th is rock solid, the whole frame is exposed, for testing purposes, I will re-cock the leaf shutter, change the leat shutter speed to 1/125th, some times, I will get the full frame exposed, other times, the top half of the picture is dark, and now, I never get more then a sliver of exposed region, with the top part being dark! I am suspecting the camera focal plane shutter? or I am missing some set up step, or setting?
Any help with be greatly appreciated!