TTL pass-through gets confused
Hi there,
I have been using a few V6's for a few months now. My setup is a V6 on a Canon 5D Mk3 and either a 600ex or 580ex 11 on top of the V6 (on camera) and TTL pass-though enabled.
I initially had some weird behaviour and found that if I set the flash back to ETTL everything works fine. I can then happily shoot for a long time and all is good, but sometimes, and this has happened regularly, the TTL pass-through gets confused and starts emitting more flash power than it should. For example I may be shoot with +0.8 flash exposure compensation, and suddenly the images are a lot brighter. To resolve the issue I have to remove the flashgun, turn off the V6, fit the flashgun again and turn on the V6.
So bottom line is something is going wrong with the TTL pass-through over time.
I initially had some weird behaviour and found that if I set the flash back to ETTL everything works fine. I can then happily shoot for a long time and all is good, but sometimes, and this has happened regularly, the TTL pass-through gets confused and starts emitting more flash power than it should. For example I may be shoot with +0.8 flash exposure compensation, and suddenly the images are a lot brighter. To resolve the issue I have to remove the flashgun, turn off the V6, fit the flashgun again and turn on the V6.
So bottom line is something is going wrong with the TTL pass-through over time.
Any comments would be appreciated.
Thanks,
David
Comments
When using the V6 with Canon flashes in TTL pass-through mode, please select the flash profile to Canon flash according to the flash mode. If not, the TTL pass-through may not function properly.
BYW, have you updated your V6 to the latest firmware? To check it, please press and hold the A + D button, then switch it to either TX or RX mode from Off position. The firmware version will be shown on the display.
Hope that helps!
Senior Product Specialist
Cactus®
Harvest One Limited