I just bought a simple radio trigger remote off from ebay for my SB900. It maybe because of the radio trigger problem but The sync speed of the flash is driving me nuts. I've tried different settings.
According to the SB900 manual. Sync Speed should be lower than 1/250. But some how I still catch the rear curtain as I close down my aperture to the smallest and flash output as 1/1. Sometimes it works fine and sometimes I get the curtain.
If I set the flash output down to 1/32 or lower, open the aperture to at least f/5.6 everything works fine. Any idea? Is it because of the radio remote problem? does it have anything to do with the sync speed? Or some of the feature I set incorrectly.
Also that is there a way to get SB900 to beep the recycle sound when I set it on normal "on" mode (not slave nor master)??
Do you have your camera set to manual und did you select your shutter speed manually? If so, did the black bar appear only in some of the images you took even though all were made with the same shutter speed?
Lucky_Dog wrote:
Sync speed is a function of the camera, not the flash.
It can also be affected by the type of connection between camera and flash. Some radio links are better than others. As mentioned, some will introduce a delay into the loop, and so at higher shutter speeds, by the time the flash begins to fire the second curtain has already started to close.
I had this same thing happen with PWII. I contacted them and they said same thing that some transmitters have a small delay and to change my shutter speed. My solution was that one PW would do it and one would not, so I marked them...problem gone. I also noticed the problem more prevalent when I was very close to the receiving PW.
HapZungLam wrote:
huh? even a $300+ pocket wizard unit will have the same problem?
On the othere hand, the Pocket Wizard ControlTL system can give faster sync speeds in many cases, through their proprietary "Hyper Sync" optimization.
Any time you take a Speedlight/Speedlite off the hotshoe and insert a non-camera brand device, you start introducing variables that can have unexpected results. You just have to learn what the variables are and work within those parameters.
