OK, so I tried this out using the spinning bicycle wheel plan...
I turned a bike upside down, grabbed a tripod, and tried to shoot while the wheel was spinning about the same rate...
First, with the K1, which has a 1/200 s flash sync speed and a vertical travel.
Once at 1/50s (to match the H1a flash sync, below)...
Then once at 1/1000 (as fast, more or less, as I can get the H1a to go)
I wasn't expecting anything here due to the speed of the shutter. Nice colors from that lens, and the exposure seems right on...
Now the H1a, which has a 1/50 s flash sync and a horizontal cloth shutter, so presumably much slower travel.
First at 1/50s to see how things look with the shutter all the way open...
And once at full speed... so fast the value doesn't even show up on the shutter dial... I figure it's close to 1/750 based on the difference in exposure... and the fact the spokes have blurred into invisibility and the reflector is blurred...
The short answer? I got nothin...
The slightly longer answer? I still got nothin...
Maybe I need to get out the Graflex after all... maybe 35mm full frame is just too small to do this easily...
Or maybe I need a different subject...
Any ideas?
-Eric