580EX II preflash ?

[Splog]

Hi all
I'm having a thick moment how do I stop the pre-flash on the 580EX II? Can't find a reference to it in the manual ....

 

[mr_pants]

If you're using e-TTL, then the pre-flash is something you're stuck with. You can hit the FEL button first, though, to separate the pre-flash from the main flash.

 

[Splog]

If you're using e-TTL, then the pre-flash is something you're stuck with. You can hit the FEL button first, though, to separate the pre-flash from the main flash.

Thanks for the reply but I'm using it in manual

 

[webbEvents]

IIRC switch off the ETTL in the flash control menu on the camera, or switch the flash to manual mode
Webby

 

[david1701]

my 430 has no preflash in manual

 

[Splog]

IIRC switch off the ETTL in the flash control menu on the camera, or switch the flash to manual mode
Webby

Thanks Webby
I thought I had the flash set in manual mode maybe not I'll try again!

Steve

 

[Canon Bob]

A wild guess, but have you got the 580 configured as a "master"? If that's the case then the preflash is there to trigger any additional units that it expects to see.

Bob

 

[Splog]

A wild guess, but have you got the 580 configured as a "master"? If that's the case then the preflash is there to trigger any additional units that it expects to see.

Bob

Serious thanks Bob
That is most likely the problem I never even considered that and I had been messing around to fire the MT24 ..... :bonk:

Steve

 

[Janice]

A wild guess, but have you got the 580 configured as a "master"? If that's the case then the preflash is there to trigger any additional units that it expects to see.

Bob

why does it allow you to configure it as master or slave when you cant use it as a slave?

 

[david1701]

why does it allow you to configure it as master or slave when you cant use it as a slave?

cos it can be a canon IR slave

 

[Janice]

cos it can be a canon IR slave

can it? it can't fire from a master firing though can it? not without a trigger attached.

 

[Canon Bob]

can it? it can't fire from a master firing though can it? not without a trigger attached.

It can act as a slave "off camera" if there's another 580 on the hotshoe.
(see page 34 of your 580 user guide)

Bob

 

[david1701]

can it? it can't fire from a master firing though can it? not without a trigger attached.

not a dumb optical slave but will talk via clever IR trickery