I'm not sure about wireless, but here's a shot I took after I read your post with the 135mm LS at 1/500 s using a 30-year-old 280T.Hi,
I am very curious about the 645D. What is the fastest flash sync I can get using wireless. I know the published speed is 1/125, but also it's mentioned that high sync speed can be achieved with wireless. Any insight would be appreciated.
Thanks for the comment Dave
Tom