Originally posted by filorp YES YES YES and the same happens with nikon setup
OK, does the V6II receiver show 1/1 as the power level when you take a shot with the camera?
The receiver power levels should follow those you set on the transmitter.
Is the flash strength the same, whether you take a shot with the camera OR press the test button on the V6II transmitter (the one on the camera)?
Originally posted by filorp (d800 and nissin 866II which is listed as compatible)
Well then the Nissin should also work, most likely even through auto detection.
It also should work with the Pentax camera, not just the D800.
The one aspect that is really important is to ensure that you turn on the flash first and then the V6II receiver. Does the V6II receiver recognise the flash when you choose "AUTO" detect?
If not, it could indicate a connection issue.
Normally, I'd always do a manual configuration, but for troubleshooting it can be good to use the AUTO settings on receiver and transmitter in order to see whether devices are properly recognised.
You could do a factory reset on all units and then report each setting that you manually change on each unit.
Originally posted by filorp What I am after is manual power control 1/129, 1/64, 1/32 etc, with hss from the cactus unit attached to the camera and cross branding.
In that case, firmware version V1.1.013 is exactly right for you.
Originally posted by filorp Once I set everything up the output is around half the power of the power given by flash set manually
Can you affect the flash power by changing the power levels on the V6II transmitter?
In other words, can you make the flashes produce less output by selecting 1/16, or 1/128 instead of 1/1?
You should be able to just use the test button on the transmitter unit to check whether the flash output levels change proportionally with the power settings on the transmitter.
If the flashes don't respond to power level changes, they are not being properly recognised or the flash system / flash profile configuration is not correct. Note that for the "Nikon flash" (the Nissin flash has "Nikon dedication", right?) you need to select "Nikon" as the flash system on the receiver and then the correct flash profile. This is true, even when you use the V6II transmitter on a Pentax camera.
Originally posted by filorp Its worse in nikon setup - the flash contribution is barely visible.
Strange. Can you influence it using the power level control on the V6II transmitter?
I understand there is a small difference between full manual power and "full" P-TTL/i-TTL power. As the flashes on the V6II receivers have to be driven using P-TTL/i-TTL (in order to support remote power level control) you'll always have a small loss compared to a fully manual triggering. However, the difference should not be that big and in any event, the flash should respond to power level changes.
Originally posted by filorp Yes, I did it before we start chatting here, tried different metz profiles as well
If you think it would help, feel free to post all relevant configuration settings for both transmitter and receiver. Then we could have a check whether we see anything wrong with it.
You could also post to the Cactus community forum, perhaps you'll find better help over there.
Originally posted by filorp there is only one firmware available for this model with pentax mount
Are you sure that this is the only firmware version that was available ever? Perhaps, currently it is the only available one, but perhaps there have been others in the past?
Last edited by Class A; 05-25-2018 at 06:34 AM.