02-03-2019 10:27 PM
You have to have the internal flash on to communicate with the 430 flash. It uses pulses of light from the flash to send signals. I strongly suggest you download the full manual and go through the wireless flash section of the manual.
02-04-2019 04:45 PM
The 430EX RT-II has both radio and optical wireless capability. Because your camera can only use optical, make sure the flash in in optical slave mode.
The 270EX only has optical slave, so try it and see if it works
02-04-2019 09:29 PM - edited 02-04-2019 09:48 PM
It looks like you have OPTICAL wireless enabled. It should work.
Just double check the channel and group to make sure it is all the same.
Review all the steps below to make sure you didn't miss anything:
02-06-2019 03:45 PM
02-06-2019 03:53 PM
Yes, the camera's built-in flash must fire to trigger the slave in optical mode.
BUT.... The way you have it set, you will see the flash fire, but it is actually sending coded optical light signals just before the slave flash fires, and you should not see the light from the built-in flash in your photo.