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trailing curtain sync on YONGNUO YN560-III

balsembi
Posted 20/09/2014 - 15:40 Link
hi all,
im interested in doing some shots using the trailing curtain mode on my K3 using a YONGNUO YN560-III flash gun. when I set the K3 into trailing curtain mode, the flash still fires (despite the shutter speed) when the shutter opens and closes.
I want it to just fire when the shutter is about to close.
ive tried everything but no luck. what am I doing wrong???

many thanks

bal
Pentax K3 Pentax SMC-FA 50mm 1.4
Pentax Kr Pentax SMC D FA 100mm F2.8 Macro
SMC DAL 18-55mm Pentax SMC DA 18-270mm F3.5-6.3
SMC DAL 55-300mm Pentax DA 15mm HD F4ED AL
SMC Pentax-M 1:2.8 28mm
Edited by balsembi: 20/09/2014 - 15:41
pentaxian450
Posted 20/09/2014 - 18:11 - Helpful Comment Link
I don't know much about the Yongnuo flashes, but the first flash might be a pre-flash just before the shutter opens. If you have only one properly exposed "image" on the frame, then that's it.

If the two flashes do happen when the shutter is open, then you would see two more or less properly exposed images on the same frame.
Yves (another one of those crazy Canucks)

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