SB900 Sync Speed problem

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Archive 2010 · SB900 Sync Speed problem

HapZungLam
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p.1 #1 · SB900 Sync Speed problem

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)??

Sep 08, 2010 at 08:14 PM

Lucky_Dog
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p.1 #2 · SB900 Sync Speed problem

Sync speed is a function of the camera, not the flash. Which body do you have?

Sep 08, 2010 at 08:24 PM

HapZungLam
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p.1 #3 · SB900 Sync Speed problem

D700

Sep 08, 2010 at 09:13 PM

Tobi.
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p.1 #4 · SB900 Sync Speed problem

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?

Tobi

Sep 08, 2010 at 09:18 PM

HapZungLam
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p.1 #5 · SB900 Sync Speed problem

yap

In M mode, same shutter speed every exposure

Sep 08, 2010 at 09:27 PM

E-Vener
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p.1 #6 · SB900 Sync Speed problem

Whichj "simple radio trigger" are you using?

Sep 08, 2010 at 10:37 PM

HapZungLam
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p.1 #7 · SB900 Sync Speed problem

ishoot PT-04 CN II

Sep 08, 2010 at 10:53 PM

Chris Beaumont
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p.1 #8 · SB900 Sync Speed problem

Radio triggers have a delay transmitting and receiving, band should be gone by 1/200, 1/160 absolute tops.

Sep 08, 2010 at 11:46 PM

BrianO
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p.1 #9 · SB900 Sync Speed problem

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.

Sep 09, 2010 at 12:07 AM

gregSC
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p.1 #10 · SB900 Sync Speed problem

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.

HTH
Greg

Sep 09, 2010 at 12:17 AM

HapZungLam
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p.1 #11 · SB900 Sync Speed problem

huh? even a $300+ pocket wizard unit will have the same problem?

Sep 09, 2010 at 12:58 AM

BrianO
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p.1 #12 · SB900 Sync Speed problem

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.

Sep 09, 2010 at 01:22 AM

HapZungLam
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p.1 #13 · SB900 Sync Speed problem

well, I think it is the quality of the radio signal. I sync the device with a cable and it works fine. lol oh well, only $25 bucks what do i expect!

Sep 10, 2010 at 12:17 AM

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