davejann Loc: Portland Oregon

I am trying to use my on camera pop up as a fill with an optically triggered satellite flash as the main. How can I stop the "pre-flash" from firing? Thanks in adavance

snowbear

Disable "red-eye reduction."

RocketScientist Loc: Littleton, Colorado

YUP.

davejann Loc: Portland Oregon

Thanks guys will try :)

Dria Loc: Ohio

It is my understanding that the pre-flash is what triggers "optically triggered" flash..that is if you are sing the 60D to trigger the flash

davejann Loc: Portland Oregon

There is no way to disable the preflash, apart from not using the onboard flash. The preflash takes care of the metering and sends the signal to the on board to fire. You can see the bottom of page 141 of the manual.

The above was from Canon. Sadly, engineers still think that they know what we want better than we do. The only work around that I can think of is to use an on camera flash that doesn't have a preflash. Thanks for thrying tho:)

GoofyNewfie Loc: Kansas City

Off topic, but i played with a 60D the other day.
Realy nice camera!
(a mostly Nikon guy)

LGilbert Loc: Earth

[quote=davejann]There is no way to disable the preflash, apart from not using the onboard flash. The preflash takes care of the metering and sends the signal to the on board to fire. You can see the bottom of page 141 of the manual.]

The quote on page 141 is pertenant only to firing external Speedlites wirelessly (when the internal flash is disabled) and does not stipulate anything about the pre-flash. The preflash uses the onboard in low power stutter mode to aid focus when the button is half-pressed. It does not set off the synced flash for the actual photo. You can pre-flash a number of times before initiating a picture.

I have had no trouble with a 60D internal flash controlling external, wireless flash units that are designed to detect pre-flash events. External flashes such as the LumoPro LP160 Quad Sync are capable of being set to optionally accept the pre-flash event without tripping by selecting S1 on the slave selection switch. When selected the preflash does not set off the external flash units.

Of course, utilizing some wireless remote sync units to trigger the external flashes would increase the versatility of your equipment.

davejann Loc: Portland Oregon

[quote=LGilbert]

In the Old Country, one would say "Troppo travaggio" which literally is too much work but actually was used more to mean "A long run for a short beer".

Since what I want is the on camera flash to function a) as a trigger and b) as a fill while the satellite works as the main, the easiest solution to me is a small on camera flash that does not give a preflash. The application is shots, at a conference in a darkened auditorium, of the speaker. I was trying to avoid caring too much weight. Oh well...

Thanks for trying though:)