Canon 5D3 with 600EX TTL pass through failing every so often
Shot a wedding tonight with the Cactus V6 (newest firmware) between my 5D3 and 600EX. The V6 is set for TTL pass and set to Canon 600EX.. The ETTL works like normal most of the time BUT, every so often, the 600EX (which is in ETTL mode) starts firing FULL POWER until I turn the Cactus V6 off and then turn it back on. Its like the TTL pass thought fails and only send a full power fire commend. Over 7 hours it did it about 8 times and ruined a few of my shots..
Comments
Brand Manager
BTW, in your above case, did you have any other remote flashes used?
Or you only had one flash, which is mounted on the TX with TTL Pass Through?
Thanks!
Brand Manager
Just double checking, but have you all already:
Thank you!
Brand Manager
Brand Manager
TTL with FEC works absolutely fine then it suddenly decides to go nuts and fire at full power. This is totally unacceptable for a professional product.
This almost wants to make me dump the V6's and just go with 600ex's which are reliable. Is there any progress on this issue with the Cactus R&D team? It has been months since first reported... Please guys - get this sorted out!
It fixed a potentially related issue (V6 not initialising the profile after power on) and perhaps it will help with the problem reported here as well?
If you guys want to try I can send you a beta version of the new firmware. Please email me directly if you want to test it: antoniolao@cactus-image.com
Thank you!
@davebell55 @Jaap @RNorth @Dyeless
Brand Manager
Hey all, the new firmware has been released. It "Fixed the occasionally not responding error when the V6 TX is working with a Canon camera and an on-camera flash with TTL pass-through enabled." However it may not completely take away the rare full power pop. If in case you encounter one, continue and it will be back to normal on your next shot.
Thank you!
Brand Manager