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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 30 Jul 2012 (Monday) 16:44
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Yongnuo YN-622C Controller Trigger

 
CliveyBoy
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Sep 20, 2012 17:09 |  #541

John_N wrote in post #15020272 (external link)
could you mount a YN RF-600TX on top so as to allow me to trigger the flashes via the 622c and have the 600TX trigger the studio lights?

The RF-602 and 603 can be used that way, so it seems likely that you will be able to. The added propagation time may affect the sync timing.


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Sep 20, 2012 17:20 as a reply to  @ post 15020250 |  #542

Yes, that's correct..I use 2 receivers and the Ettl calculations are shared between the two units automatically...works really well.


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Sep 20, 2012 17:22 |  #543

Sweet - now thats a bonus :D



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JordanH
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Sep 20, 2012 17:24 |  #544

Yeah, should work something like this setup:
http://flashraw.com …flashes-from-one-receiver (external link)

622s and 568s have sync ports. Can anyone confirm this works?


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CliveyBoy
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Sep 20, 2012 17:44 |  #545

JordanH wrote in post #15020370 (external link)
Yeah, should work something like this setup:
http://flashraw.com …flashes-from-one-receiver (external link)
622s and 568s have sync ports. Can anyone confirm this works?

A hot-shoe flash can be connected by a PC-sync cable, but it receives only a Fire! command. Everything must be set on flash, and there is no ETTL/HSS/FEC/Ratio etc.

To get full facilities, each flash must have a 622 driving it via the hot-shoe.


Clive, and Great G/D Abbie
50D; 580EXII, 430EXII, 550EX, YN685EX; YN-622C II, YN622C-TX and YN560-TX controllers TOYUG II v5.10 YN622 System Guide (external link)
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Submariner
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Sep 20, 2012 18:37 |  #546

John_N wrote in post #15020272 (external link)
I've skimmed this thread and just placed an order, hope they're a good as you guys say :D

Totally off the wall question I just thought of - could you mount a YN RF-600TX on top so as to allow me to trigger the flashes via the 622c and have the 600TX trigger the studio lights?

Just tried this to death on Bowens.
You MAY be able to with the Bowens R series and the Pro series as they can miss the first 1 to 3 flashes (if you use your speedlights with ETTL) and you are lucky that the ETTL preflashes are picked out by the Bowens cells individually as a single preflash. Both of these also have leaning mode to count these preflashes.
NB some of the preflashes confuse the Bowens counting mechanism eg the Canon Wireless mode will not work the Bowens can't register them correctly.
The positive side is you probably would go 'Manual everything' - well I did, because if not metering with a flash meter gets too confusing. By that I mean you could set up the speedlights but when the studio comes in that will throw the lightmenter and when the speedlight come on i.e. all flashing then they through ETTL will try to self adjust.
Maybe you can figure out how to compensate for a self compensating additional set of light, but as a novice it blew my mind especially if you try to use ratios and groups!
But if all is manual it should work - but best check with someone like Clive about my theorys. Just trying to steer you into asking the questions I hit.
If I do go this way I'll post my results as this is what I want to do.

My current thought is to use the 622's on both studio flashes and on the 2 speedlights in Manual mode i.e. all manual. I'm hoping I will be able to remotely adjust the power thought the 622's and I have the luxury of the Bowens remote for remotely varying thier power levels and groups. If I get megga lucky may even be able to up the sync speed to a max of 1/900 sec [Bowens flash duration] - but there are a number of issues in that process.

NB translate Bowens for your studio lights.


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EmaginePixel
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Sep 20, 2012 20:30 |  #547

Bummer... Just tried the new 622c to fire my Travelite 750 monolight via PC-sync connection and no fire. Won't even trigger it at all. Only thing it did was an initial dump. ARGH!!!

Works perfectly with speedlites (on-shoe) though.


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dmward
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Sep 20, 2012 21:53 |  #548

All this discussion about piggy backing a simple fire wireless trigger with the YN622 is getting confusing.
When I've testing these scenarios in the past there are a few things that have to be considered;
A) does the additive propagation delay cause the second flash firing to occur too late?
B) does the primary triggering device send a clean X sync pulse to the secondary triggering device?
i.e. not timed to the TTL pre-fire but rather to the X sync fire which should occur just after first curtain clears or just before second curtain starts closing.
C) If its an optical piggy back, does the optical pickup have a setting that ignores TTL pre-flash sequences.

The tests that I did with other triggering systems illustrates that if one pays attention to these items a configuration can be assembled that will work, providing the timing issues are within the exposure limits.

Once I get my YN-622cs I can test these scenarios. Hopefully any day now, they were shipped on 9-1 according to the HK vendor from whom I purchased them.


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CliveyBoy
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Sep 20, 2012 22:13 |  #549

mellofelow wrote in post #15021144 (external link)
Bummer... Just tried the new 622c to fire my Travelite 750 monolight via PC-sync connection and no fire. Won't even trigger it at all. Only thing it did was an initial dump. ARGH!!!
Works perfectly with speedlites (on-shoe) though.

I see that you have a 1/4" phone jack with a 5v trigger voltage, which should be safe. Is the photo cell turned off?

There can be a power up/down flash; that's normal for the 622.

Was the cable plugged into the receiver 622 and not the camera one. If your flash control menu has wireless enabled and Master Flash disabled, both transmitter's on-top hotshoe and its pc-sync port will be disabled, I think.

What flash mode did you select? Not that it should matter - the centre pin and the pc-sync give 1st curtain. 2nd-curtain or pre-shutter sync, as selected by menu.

I would expect it to work and sync nicely, given appropriate settings.


Clive, and Great G/D Abbie
50D; 580EXII, 430EXII, 550EX, YN685EX; YN-622C II, YN622C-TX and YN560-TX controllers TOYUG II v5.10 YN622 System Guide (external link)
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EmaginePixel
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Sep 20, 2012 22:22 |  #550

wooaaahhh... not so fast. So I switched strobes and give my Mettle 600AD a try and check this out!! Strobe and YN622C in the frame. EXIF intact.

I noticed as I up the shutter speed, The peak tends to be lower in the frame.

1/160 F11 ISO100
1.

IMAGE: http://www.emaginepixel.com/photos/i-SrGW9rd/0/M/i-SrGW9rd-M.jpg

1/200 F10 ISO100
2.
IMAGE: http://www.emaginepixel.com/photos/i-w5T6T23/0/M/i-w5T6T23-M.jpg

1/800 F4.5 ISO100
3.
IMAGE: http://www.emaginepixel.com/photos/i-VHMMp6N/0/M/i-VHMMp6N-M.jpg

1/2000 F3.2 ISO100
4.
IMAGE: http://www.emaginepixel.com/photos/i-qhB4bfZ/0/M/i-qhB4bfZ-M.jpg

1/4000 F3.2 ISO200
5.
IMAGE: http://www.emaginepixel.com/photos/i-hHTX7df/0/M/i-hHTX7df-M.jpg

1/8000 F3.2 ISO400
6.
IMAGE: http://www.emaginepixel.com/photos/i-pTZgjKs/0/M/i-pTZgjKs-M.jpg

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jakefreese
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Sep 20, 2012 22:29 |  #551

mellofelow wrote in post #15021649 (external link)
wooaaahhh... not so fast. So I switched strobes and give my Mettle 600AD a try and check this out!! Strobe and YN622C in the frame. EXIF intact.

I noticed as I up the shutter speed, The peak tends to be lower in the frame.

1/160 F11 ISO100
1.
QUOTED IMAGE

1/200 F10 ISO100
2.
QUOTED IMAGE

1/800 F4.5 ISO100
3.
QUOTED IMAGE

1/2000 F3.2 ISO100
4.
QUOTED IMAGE

1/4000 F3.2 ISO200
5.

1/8000 F3.2 ISO400
6.

Oh I can't wait to get mine!

What are yall seeing on real life range on them? Like full line of sight, they say 100meters which should be good for what I shoot. But I just want to make sure my PCB's have worked fine in my applications and they say 100yds. I was really wanting to go to the PW's but the budget wont allow right now so its the YN's shot.


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CliveyBoy
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Sep 20, 2012 22:33 |  #552

dmward wrote in post #15021530 (external link)
A) does the additive propagation delay cause the second flash firing to occur too late?

It certainly could, as I warned. Depends completely on the second device.

dmward wrote in post #15021530 (external link)
B) does the primary triggering device send a clean X sync pulse to the secondary triggering device?

No. The primary device sinks a signal from the secondary device.

dmward wrote in post #15021530 (external link)
not timed to the TTL pre-fire but rather to the X sync fire which should occur just after first curtain clears or just before second curtain starts closing.

The 622s deliver the camera's 1st curtain, 2nd curtain or pre-shutter sync through the PC-sync port. I think that the hot-shoe conforms to Canon rules - such as 2ndC being delivered through the data pins and not the centre pin. This is why, unlike Nikon, a hack is sometimes needed as a "Canon interpreter" device to drive o/c flashes.

dmward wrote in post #15021530 (external link)
C) If its an optical piggy back, does the optical pickup have a setting that ignores TTL pre-flash sequences.

Oh, No! Never. Unless reliability is not required. A few posts back demonstrates the problems that can arise. There can be one to four preflashes per shot, depending on ETTL group settings.


Clive, and Great G/D Abbie
50D; 580EXII, 430EXII, 550EX, YN685EX; YN-622C II, YN622C-TX and YN560-TX controllers TOYUG II v5.10 YN622 System Guide (external link)
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elv
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Sep 21, 2012 00:00 as a reply to  @ CliveyBoy's post |  #553

I tried quite a few manual triggers on top of the 622c and had no problems. Pushing past x-sync and watching the shutter creep into the frame shows there was very little added delay when on top of the 622c.

(I haven't tried any other ETTL triggers on top though)

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Sep 21, 2012 05:39 |  #554

mellofelow wrote in post #15021144 (external link)
Bummer... Just tried the new 622c to fire my Travelite 750 monolight via PC-sync connection and no fire. Won't even trigger it at all. Only thing it did was an initial dump. ARGH!!!

Works perfectly with speedlites (on-shoe) though.

Depending on which age, and era, of Travelite you have you could well have run into a brick wall. The Travelite was originally designed in the film era and, like 5 of my studio flash units, had a >5v trigger circuit. I've tried every combination I can think of and radio slaves (3 different makes - Quantum, Pixel & Yongnuo) simply will not trigger them other than extremely spasmodically.

I took this up with Bowens technical dept and got a very strange reply - "It's probably something to do with the soldering, some of the soldering on the older units is questionable". I found this a very weird answer; granted that it there are cold solder joints in the circuit the resistance will increase but as the inventor of the Monolight configuration and with almost 50 years experience in the filed, I'd have expected something as simple as decent soldering would be a given.

My suspicion, based on 5 units by 2 different makers all of which have 15-22v trigger circuits and all of which exhibit the exact same behaviour, is that the trigger voltage associated with modern radio slaves is simply insufficient to latch the circuit in older units. I've not really thought this through (threw a hissy-fit instead and adopted a different working method) so could be way off track with this - if you do happen to find a solution, let me know PLEASE.


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Sep 21, 2012 07:58 |  #555

haha, just my timing - ordered yesterday £65.99 - looked today £62.99 (external link) - still I dropped them a line maybe I'll get a good will partial refund.



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Yongnuo YN-622C Controller Trigger
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