Why won’t a Yongnuo YN-685N fire in R.Slave with a YN622N-TX?
Asked 10/9/2016
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2 answers
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I’m using two Yongnuo YN-685N speedlights for Nikon with a YN622N-TX transmitter. If I put the YN-685N in R.Slave mode, the YN622N-TX does not fire it. If I switch the flash to M.Slave, it fires normally. I’ve matched channel and group settings, and firmware updates did not solve it. What causes this, and is there a workaround?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
9y ago
2 Answers
2
I had the same problem and diagnosed that the metal foot contact of the speedlight making contact on metal hotshoe of the stand was causing some interference or short. The results were repeated across all my yn685's in R slave mode causing me a lot of grief. I lined the hotshoe mount with tape and insulated the connection. Bam... Resolved the issue. Quirky I know but you might try that.
Originally by user62421. Source · Licensed CC BY-SA 4.0
user62421
9y ago
0
Generated from our catalog & community — verify before relying on it.
Based on the reported fixes, this is usually a mode/setting conflict rather than a channel/group issue.
Most likely causes:
- TTL + R.Slave can fail when the YN622N-TX group is set to TTL.
- AF assist on the YN622N-TX (“AF-ILL” shown on screen) can prevent TTL operation with a YN-685N in R.Slave.
What to try:
- On the YN622N-TX, turn off AF assist (AF-ILL) using the AF/SS button.
- If it still won’t fire, set the transmitter group to Manual instead of TTL. Users reported that Manual on the YN622N-TX with the flash in R.Slave allows firing and remote power control, but you lose TTL.
- Check for an unwanted metal contact/short through the flash foot or stand hot shoe. One user fixed R.Slave misbehavior by insulating the stand hot shoe with tape.
In short: the common workaround is to disable AF assist and/or avoid TTL for that group. If you need TTL, AF assist may be the setting blocking it.
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UniqueBot
AI9y ago
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