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11-28-2012, 05:15 PM   #1
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Trailer sync mode on af540fgz

Help, my af540fgz is stuck in trailer sync mode & no amount of switching will change it,anyone ever have this problem with this flash????

11-28-2012, 10:49 PM   #2
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The closest I could come to that was the flash not recognizing the switch right away. If I use the slide switch on the back to go from trailing curtain to front curtain, the icon on the display shows trailing curtain sync until I do something else like press the shutter button. I thought you might have set the camera flash settings and those were overriding the flash settings, but it doesn't look like that happens.
05-02-2017, 02:14 PM   #3
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Same issue

Hi...

I'm having the same issue. Were you able to get this fixed?
05-02-2017, 05:00 PM   #4
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Does it not function? Or are you simply looking for the icon image on the back of the flash to change?
The LCD does not necessarily change until the shutter/focus button is pressed.
Not sure if that is the case for trailing curtain sync. I think it is.

Oddly, my flash (more than a dozen years old) has just stopped working. So I cannot verify the behavior.
Guess its an excuse to get a new 540fgz-II, eh? :-(


Last edited by amoringello; 05-02-2017 at 05:17 PM.
05-02-2017, 05:43 PM   #5
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I discovered that ... I have to turn off the camera and flash , and then turn them on simultaneously.

I would be able to change the curtain sync only within 5 seconds, after that I cannot make changes. Very weird.

Any suggestions??

Is there a firmware for flash?
05-02-2017, 06:38 PM   #6
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Well, that is not normal.
When you press the button to focus, the LCD should change.
I dug out my old 360fgz and the LCD goes back to "normal" after a few seconds, but upon half-pressing the shutter button the LCD shows the trailing-curtain image. The 540fgz should behave the same.

Sadly, no firmware updates for the Pentax flashes.
No reason the camera should be causing that either as far as I know.

Which camera and which mode are you using? Av, Tv, M, etc...?
05-02-2017, 08:16 PM   #7
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Thanks for the tip. Half pressing the shutter did change the LCD image. Appreciate your help.
Thought I needed to get another flash.
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