Originally posted by adwb OK one thing lets make sure you have the set up correct.
set your flash to manual and turn it down to 50% power
set you camera to manual; set shutter speed to 1/60 ; set you aperture to f5.6 ; position your light 3 meters [9 feet ] from the subject
DO NOT have you flash set to any mode other that the first on on the left on your flash menu [that should read flash on ]
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take a picture, with those settings you will have a correct or as near as dam it correct exposure.
over
Now, some very interesting things have taken place after I set exactly how you mentioned. So you know, I used the A 50/1.7 on the K-x this time, flash on Slave2, and the Cactus' on Channel 1.
As mentioned above in Happyman's post, I tried it on 'M' - master setting and the camera could trigger the flash sitting on the Cactus receiver. However, when I pressed the 'test' button on the Cactus, nothing happened! Also, the flash goes into the P-TTL mode after I put it on M mode.
Secondly, when I put the flash on S- Slave mode and pressed the camera shutter, nothing happened, neither the Cactus on the camera activated the flash after pressing its 'test' button.
So in sum, the Cactus' are still not able to activate the flash when I press the 'test' button, but they help in triggering the flash wirelessly, in Master mode on the flash, when the camera shutter is pressed! And Its the P-TTL that is active on the flash, and not manual. Is that odd or normal?