Can't work with mFT TTL passthrough :-(

MartinWagner · July 2014

Hi,

am i too dumb for it?

OM-D, V6 TX on Camera, TTL-Passthrough activated

V6 RX, Flash (FL50 or FL600R) can't be set on TTL...

If the Flash is in the Camara's Hotshoe TTL is activated, but as soon as i remove it only A or M...and it even won't flash manually :-(

Help?

Thx!

Admin · July 2014

Hello

While the V6 does not transmit TTL information wirelessly, The TTL pass-through is designed to pass TTL signal from the camera to flash via the transmitter (TX) and vice versa. It supports Olympus system. With TTL pass-through, the TTL flash behaves as they mounted directly on the camera hotshoe. The V6 will work as a wireless flash commander while supporting all the automatic / TTL feature.

For your info., the V6 can wirelessly remote power of Canon, Nikon and Pentax system flash. However, I'm afraid this cannot apply to Olympus system flash.

I hope this information is helpful. Thank you.

mcpch · July 2014

whenever I switch to TTL pass-through on Nikon- with my SB910 the V6 does not transmit to the Catcus RF60 ?

Admin · July 2014

Thank you for the feedback.

I've tried your setting with Nikon SB-910, Nikon D700 and Cactus RF60. The V6 doesn't transmit to RF60 when TTL pass-through is turned on at the first shoot. So before turning on the TTL pass-through mode, please take a test shoot to the RF60 by pressing the test button on the V6. Once the test shoot is success, switch the V6 to TTL pass-through mode. The SB-900 will be working as it mounted on the camera and the V6 will be able to transmit other RF60s at the same time.

The same solution also apply to other Nikon flashes, such as SB-600.

Our engineering team is working to find a better way to handle this operation. Please stay turned with our firmware updates.

Thank you.

MartinWagner · July 2014

nope...you got me wrong ;-)

when i mount the FL50 or FL600R ON the Camera, TTL can be activated on the Flash, if the V6 is between the Camera an the Flash (TTL pass-through enabled) the FL50 or FL600R can't be switched to TTL :-(

Admin · July 2014

Hello MartinWagner.

The TTL pass-through allows the flash to work as they are mounted directly on the camera. So, all TTL function can be enable.

Sorry, I don't have OM-D, FL50 and FL600R to test. However, please try this if it can solve the problem.

1. Mount the V6 on the camera's and the flash's hotshoe.
2. Enable the TTL pass-through on V6(TX),
3. turn on the flash and set it at TTL mode

The flash will be able to operate in TTL mode. I hope this is helpful. Please let me know if you have any concern.

Thank you.

HKO · July 2014

I'm also strongly interested to use Cactus V6 for Olympus OM-D cameras and flashes. So I would like to hear, if this works.

Class A · July 2014

I'm also strongly interested to use Cactus V6 for Olympus OM-D cameras and flashes. So I would like to hear, if this works.

The remote control power features only works for flash models made for the Canon, Nikon, and Pentax flash systems.

You could remote control any such flash from a V6 mounted on your Olympus camera.

If you have Olympus flashes, I believe you can still fire them, but not remote control their power. One way to check whether they would fire on a V6 receiver would be to put them on to another (non-Olympus) camera and see whether they fire. If they do, they don't need more than central pin triggering and will work with the V6 as well.

fritzpascua · August 2014

Hello Cactus, i got my V6's. i got sb-600 on the trigger hotshoe TX and when i enabled ttl passthrough, it wont fire my v6 RX. i have followed the instructions above and still wont fire on ttl passthrough. Please help me!!!

Admin · August 2014

Hello fritzpascua,

I assume you are using the V6 in wireless mode. Correct me if I 'm wrong. Just to clarify that the TTL pass-through doesn't work in wireless mode. While the V6 doesn't transmit TTL signal wirelessly, this function is designed to pass TTL signal from camera to flash via that transmitter (Tx) and vice versa. The flash is able to work as it directly mounted directly to the camera.

Please turn off the TTL pass-through in wireless mode and try again.

raychan · October 2014

This could happen if the flash profile in the V6 Tx unit is incorrectly selected.

To prevent unintended firing (or misfiring) or no triggering in TTL passthrough mode, choose any Nikon flash profile for a Nikon flash, Canon flash profile for a Canon flash. For other camera systems, please choose MANUAL FLASH to work with the TTL passthrough mode. Choosing a Canon profile to work with a Nikon flash in TTL passthrough mode could cause unintended triggering.

In case you need to update your V6, please download the firmware updater in below link,
http://www.cactus-image.com/cactus_updater.zip

I hope that helps. Thank you.

Class A · October 2014

Fire camera--expect on camera flash (SB-800) to fire in TTL mode, and the RF60 to fire at whatever MANUAL setting is set on V6 unit.

Isn't this how everything is supposed to work?

That's indeed how it is supposed to work.

It works for me just as you described.

Unfortunately, I don't have a SB-800 so cannot comment on whether this particular model causes issues.

Have you set the profile of the V6 that is on camera to "Nikon SB-800" while the V6 is in TX mode? For some flash models, it is important to select the right flash profile for TTL pass-through to work correctly. If the "Nikon SB-800" profile does not work, I'd also try the "MANUAL" one.

efe9 · October 2014

Hello, I have the same problem, the TTL pass through hot shoe V6 not work. Placing the V6 on the Olympus M5 or Olympus M1 and then put the flash on the V6, the TTL signal is not passed to the camera flash, Olympus FL50r through the V6. and try to turn them on in the proposed order and update the firmware but the problem persists, let me know if there is a solution, I have three V6 does not work with any of the V6, the biggest drawback is that the flash and camera are not connected and can not use HSS mode to activate the function of sympathy V & HSS have 3 and 2 RF60, let me know if there is any solution, thanks.

Class A · October 2014

I have three V6 does not work with any of the V6, the biggest drawback is that the flash and camera are not connected and can not use HSS mode to activate the function of sympathy V & HSS have 3 and 2 RF60, let me know if there is any solution, thanks.

A workaround you could use is to put your HSS flash on the camera directly and then use one (off-camera) V6 to optically trigger for the HSS flash.

Up to a certain shutter speed, you should be able to do this by triggering for the "MAIN FLASH", but for higher shutter speeds, you'll have to switch to "FIRST FLASH" and use an appropriate "DELAY" value.

efe9 · October 2014

Yes this is a solution, I can even with M1 fire the V6 with Sync PC cable, but I want the step function through TTL work properly, let me know because it does not work in any of the 3 units V6 that I have, thanks .

raychan · October 2014

May I help?

the TTL pass through hot shoe V6 not work. Placing the V6 on the Olympus M5 or Olympus M1 and then put the flash on the V6, the TTL signal is not passed to the camera flash, Olympus FL50r through the V6. and try to turn them on in the proposed order and update the firmware but the problem persists,

Since the V6 doesn't pre-install profile for Olympus FL50r, please select MANUAL FLASH in the V6's profile selection. Choosing other systems may result in no TTL signal in TTL pass-through of the V6.

Thank you.

efe9 · November 2014

Each advertising Cactus V6 says that through TTL works with Olympus and Panasonic, let me know because it does not work with any of the 3 V6 buy,

does not work with EM1, thanks

raychan · November 2014

Each advertising Cactus V6 says that through TTL works with Olympus and Panasonic, let me know because it does not work with any of the 3 V6 buy,does not work with EM1, thanks

Did you turn on the TTL pass-through in the V6 Tx unit. To activate that, make sure the V6 Tx is sandwiched between the TTL flash's hot shoe and the camera's hot shoe. Turn the V6 to Tx mode, press and hold the MENU button for 2 seconds. The TTL icon will be shown on the display.

I hope that helps.

All the best.

TimHenrion · November 2014

Fire camera--expect on camera flash (SB-800) to fire in TTL mode, and the RF60 to fire at whatever MANUAL setting is set on V6 unit.

Isn't this how everything is supposed to work?
That's indeed how it is supposed to work.

It works for me just as you described.

Unfortunately, I don't have a SB-800 so cannot comment on whether this particular model causes issues.

Have you set the profile of the V6 that is on camera to "Nikon SB-800" while the V6 is in TX mode? For some flash models, it is important to select the right flash profile for TTL pass-through to work correctly. If the "Nikon SB-800" profile does not work, I'd also try the "MANUAL" one.

I'm confused. According to the V6 docs, when you turn on TTL pass thru, you disable the ability to have the V6 to set the power of remote flashes. So how could the RF60 fire at whatever power setting was set on the V6?

Class A · November 2014

Tim, where in the V6 documentation do you see a statement that TTL pass-through disables remote power control?

TTL pass-through only applies to a flash mounted on top of a V6 transmitter. The transmitter does not lose the ability to set the power of off-camera flashes.

jc_boy3 · December 2014

I had problems getting TTL pass through to work on Olympus EM1 and EM5 with FL-50 or FL-50R. I have now gotten it to work, but it seems to be dependent upon how the V6 is installed in the hot shoe. If I press forward on the right rear of the V6 when installing it in the hot shoe, then the pins seem to line up and TTL is enabled and works. If the V6 is twisted in the other direction, then TTL is not enabled.

This is more of a problem with the EM1 than the EM5 (at least with my cameras and V6 versions). If I fiddle with the mounting, I can get TTL to work when I turn on the camera.

Here's how I do it. First, mount flash and V6 to camera and lock. Press forward on right rear of V6. Turn on V6. Turn on camera. If the flash turns on in TTL AUTO mode, then the connections have been made. If not, then turn off camera and try again.

jc_boy3 · May 2016

Tried this again, and can't get it to work.

jc_boy3 · May 2016

More info: I can get the flash to go into TTL AUTO mode if I jiggle the connections, but it is not communicating with the camera. The flash does not respond to aperture/ISO settings (as indicated by the distance scale) or lens focal length (as indicated by the zoom). When fired, the flash over-exposes and does not respond to camera exposure detection. So the flash looks like it is in TTL AUTO mode, but isn't communicating in other ways with the camera.

I have this now configured with a Yongnuo TTL pass-through adapter, with the flash mounted on it, and a PC-sync cable plugged into the adapter and Cactus V6. The flash will now work in TTL AUTO mode, and trigger the Cactus V6 which triggers the remaining flashes.

So, with Olympus cameras and flashes; TTL pass-through simply does not work. It would have been better to just hard wire the pass-through in the Cactus V6. If this ever gets fixed, I would love to know.

Can't work with mFT TTL passthrough :-(

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