![]() Godox really needs better integration testing. The later MULTI bursts will keep retriggering the optical slave and the flash will repeatedly fire incessantly until you turn it off. Weird footnote: the Godox TT600 and V850ii manual-only speedlights let you set S1/S2 and MULTI at the same time. If you are using S1, make sure Commander or Master mode is set to suppress the metering pre-flash, otherwise you'll trip the TT685 early and its light won't appear in the image. ![]() Press the S1/S2 "soft" button (3rd button from the left) to cycle between S1 → S2 → off.Put the flash into M mode (you can't access S1/S2 from TTL/MULTI).Put the flash in on-camera mode (i.e., out of any RF slave/master modes).Getting the TT685 into S1/S2 mode is a little hidden. The nice part about the S1/S2 modes are that they can be set off with any flash burst, so you can even use it with a fixed-lens compact camera that has no flash hotshoe. Otherwise, a TTL pre-burst is probably forced, so you'll want to use S2. On your X-E3, there is a menu selection to put the EF-X8 into "Master (Optical)". But a dumb system doesn't know whether to skip the pre-burst or not, so you have to use S2 to tell it to, otherwise the pre-burst will set off the slave flash before the shutter opens. Then, based on the meter reading, adjusts the power level on the flash to where the camera's autoexposure system thinks is a good brightness level. How TTL works is that the camera tells the flash to send out a low-power burst of a known brightness level, and meters it. S1 fires on the first burst it sees S2 fires on the second burst it sees. Basically, a sensor on the flash will fire the flash when it "sees" another flash burst. All you can tell the remote flash to do is fire power has to be set on the remote flash itself. It's kind of like using a TV remote, and uses multiple pre-flashes (like Morse code, but with light instead of sound). That usually gives you TTL, HSS, and power control from the camera. "Smart" slaving is using the proprietary light-signalling system to have the camera blip out light signals from an on-board flash (either add-on or built-in) to transfer settings from the camera to the flash. "Smart" optical capability is not there on the TT685-F or TT685-O (or EF-X8). So I wonder, am I doing something wrong or is the optical slave capability simply not there for TT685? I’ve read somewhere that people managed to do it with the TT350, Det er kun 1 år gammelt og har kun taget 600 billeder. ![]() Only the Canon, Nikon, and Sony versions of the Godox TT685 can do "smart" optical slave/master. Fujifilm, X-T30, 26 megapixels, Perfekt, Sælger det lækre lille systemkameraer Fujifilm X-T30. You can, but it's going to be "dumb" triggering, as the EF-X8 doesn't really have optical TTL capability, like an EF-X500. With full support for Sony ADI / P-TTL, including high-speed sync, and a built-in 2. I recently bought a Godox TT685 Flash and it works great with my X1 transmitter, but for the life of me I cannot make it work as optical slave with the Fuji EF-X8 flash (attached to Fujifilm X-E3). The Godox TT685S for Sony is a great speedlight for beginners as well as the seasoned professional. You're probably tripping the TT685 early. TL DR: put the EF-X8 into Commander or Master mode to suppress the TTL metering pre-flash or use S1 mode instead of S1. ![]()
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