July 30, 2014, 03:21:38 PM

Author Topic: Using multiple flash cords for speedlights  (Read 5958 times)

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Using multiple flash cords for speedlights
« on: November 23, 2011, 01:14:15 AM »
Hey all,

    I recently came across an off shoe cord that also allows a second flash to be mounted on the hot shoe position, as well. My question is this; I know it is possible, but are there any concerns that I should be aware of if using a second cord to mount a second speedlight off camera? I currently use a 7D with an OC-E3 and a 430EX. I was thinking of using another cord and get another flash to assist in flashed HS football photography so I can drop ISO and/or increase refresh rates of the flash.

Gary W.
7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

canon rumors FORUM

Using multiple flash cords for speedlights
« on: November 23, 2011, 01:14:15 AM »

bvukich

  • Spam Assassin
  • Administrator
  • 5D Mark III
  • *****
  • Posts: 726
    • View Profile
    • My (sparse) ZenFolio Site
Re: Using multiple flash cords for speedlights
« Reply #1 on: November 23, 2011, 01:31:37 AM »
Hey all,

    I recently came across an off shoe cord that also allows a second flash to be mounted on the hot shoe position, as well. My question is this; I know it is possible, but are there any concerns that I should be aware of if using a second cord to mount a second speedlight off camera? I currently use a 7D with an OC-E3 and a 430EX. I was thinking of using another cord and get another flash to assist in flashed HS football photography so I can drop ISO and/or increase refresh rates of the flash.

Gary W.

It works, but only to trigger (i.e. manual only).

briansquibb

  • Guest
Re: Using multiple flash cords for speedlights
« Reply #2 on: November 23, 2011, 01:32:50 AM »
Flash bracket with 2 speedlights mounted cordlessly works well on a 7D. Dont forget to get a high bracket as the popup is needed to run the wireless.

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #3 on: November 23, 2011, 01:41:53 AM »
Hey all,

    Wireless triggering on the 7D doesn't work on a consistent basis due to the flash being mounted @ 18-20" below the camera on a monopod with my hand in the way on the zoom ring. This is why I am looking at the possibility of multiple cords. Is there any voltage/power issues to deal with for running multiple flashes on cords?

Gary W.
7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

briansquibb

  • Guest
Re: Using multiple flash cords for speedlights
« Reply #4 on: November 23, 2011, 02:40:10 AM »
Perhaps you would tell us more -  what the issues are, the kit you have and your budget.

For example flashing with a 300mm on a 1.6 requires a different solution to shooting with an 15-85

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #5 on: November 23, 2011, 04:07:54 AM »
Hey all,

    I am using a 70-200 Æ’2.8L USM that is on loan or a 70-300 Æ’4-5.6 IS USM, mostly the former for now. The budget would be about the cost of a 580EX II. I am thinking of maybe trying to get another 430EX (II) so that the output would be more balanced. Maybe save a little $$ as well.

Gary W.
7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #6 on: November 23, 2011, 04:18:16 AM »
Hey all,

    The main issue is to get more light on a HS football field. My 430EX works great when I can ensure that the flash trigger from the 7D will reach it. With my arm in the way, it is far from a guarantee. That is when I shoot in portrait mode, if I move the camera into landscape mode, the camera itself blocks the triggering flash.

Gary W.
7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

canon rumors FORUM

Re: Using multiple flash cords for speedlights
« Reply #6 on: November 23, 2011, 04:18:16 AM »

PeterJ

  • 7D
  • *****
  • Posts: 342
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #7 on: November 23, 2011, 05:26:42 AM »
Is there any voltage/power issues to deal with for running multiple flashes on cords?
Modern cameras and flashes use low-voltage logic to trigger, so you're unlikely to run into any problems like that. Older flashes that use high-voltage could damage your camera regardless of using a cord, but using anything generally recommended for a modern Canon camera should be OK.

The only reason I say 'should' is that if you use two different kinds of flashes they might "pull up" the trigger to slightly different voltages. That wouldn't damage the camera, but could damage one of the flash units. Frankly though a flash would have to be very poorly designed for that to happen so the chances are slim. Personally I wouldn't worry about it, especially if your're planning on an EX-series for the second flash.

Edit - another thought, I wonder if the PC sync cable still 'fires' with an ETTL flash attached? That way you could have full control over one flash and use the other manually. I've never tried it myself but if nobody else knows can try it tomorrow on my 7D and let you know.
« Last Edit: November 23, 2011, 05:32:12 AM by PeterJ »

briansquibb

  • Guest
Re: Using multiple flash cords for speedlights
« Reply #8 on: November 23, 2011, 08:21:08 AM »
Hey all,

    The main issue is to get more light on a HS football field. My 430EX works great when I can ensure that the flash trigger from the 7D will reach it. With my arm in the way, it is far from a guarantee. That is when I shoot in portrait mode, if I move the camera into landscape mode, the camera itself blocks the triggering flash.

Gary W.


Put a 580EXII on a bracket and use a flash extender like this: http://www.speedgraphic.co.uk/diffusers_filters_etc/flash_xtender/12837_p.html

You need a more powerfull flash to get the distance.

RC

  • 6D
  • *****
  • Posts: 607
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #9 on: November 23, 2011, 08:44:26 AM »
Hey all,

    The main issue is to get more light on a HS football field. My 430EX works great when I can ensure that the flash trigger from the 7D will reach it. With my arm in the way, it is far from a guarantee. That is when I shoot in portrait mode, if I move the camera into landscape mode, the camera itself blocks the triggering flash.

Gary W.


I'm trying to get a visual of your setup.  If I'm understanding you correctly you have a flash mounted above your camera on a mono-pod.   You say it works when in portrait mode but not always in landscape mode.  Are you using the OC-E3 or the 7D's pop up flash to trigger the Speedlight?  I'm trying to figure out if you have a cord length issue or line of sight issue between the pop up flash to your Speedlight's sensor.

If it is a cord length issue (which I'm guessing it is not), you can purchase an extra long cord to use in place of your QC-E3.  http://ocfgear.com/ettl-cord-extra-long/
They come in 5 or 10 meter lengths.

If it is a line of site issue, you can build a mount to hold multiple Speedlights such as two and then use a 3rd Speedlight (which is connected via your OC-E3 cord) to trigger the 2 main Speedlights.  I realize this is beyond your mentioned budget but it's an option.

An excellent resource which covers what you are trying to do is covered in Syl Arena's Speedliter's Handbook: Learning to Craft Light with Canon Speedlites:
http://www.amazon.com/Speedliters-Handbook-Learning-Craft-Speedlites/dp/032171105X/ref=sr_1_1?ie=UTF8&qid=1322055433&sr=8-1

BTW, I haven't tested it but I don't think you can you use two ETTL cords to trigger 2 Speedlights--at least in ETTL mode.  I am curious is someone has tested this however.

scottkinfw

  • 5D Mark III
  • ******
  • Posts: 704
    • View Profile
    • kasden.smug.com
Re: Using multiple flash cords for speedlights
« Reply #10 on: November 23, 2011, 09:48:16 AM »

Look into a Better Beamer, cheaper, no batteries, throws the light farther.

sek

Hey all,

    The main issue is to get more light on a HS football field. My 430EX works great when I can ensure that the flash trigger from the 7D will reach it. With my arm in the way, it is far from a guarantee. That is when I shoot in portrait mode, if I move the camera into landscape mode, the camera itself blocks the triggering flash.

Gary W.


I'm trying to get a visual of your setup.  If I'm understanding you correctly you have a flash mounted above your camera on a mono-pod.   You say it works when in portrait mode but not always in landscape mode.  Are you using the OC-E3 or the 7D's pop up flash to trigger the Speedlight?  I'm trying to figure out if you have a cord length issue or line of sight issue between the pop up flash to your Speedlight's sensor.

If it is a cord length issue (which I'm guessing it is not), you can purchase an extra long cord to use in place of your QC-E3.  http://ocfgear.com/ettl-cord-extra-long/
They come in 5 or 10 meter lengths.

If it is a line of site issue, you can build a mount to hold multiple Speedlights such as two and then use a 3rd Speedlight (which is connected via your OC-E3 cord) to trigger the 2 main Speedlights.  I realize this is beyond your mentioned budget but it's an option.

An excellent resource which covers what you are trying to do is covered in Syl Arena's Speedliter's Handbook: Learning to Craft Light with Canon Speedlites:
http://www.amazon.com/Speedliters-Handbook-Learning-Craft-Speedlites/dp/032171105X/ref=sr_1_1?ie=UTF8&qid=1322055433&sr=8-1

BTW, I haven't tested it but I don't think you can you use two ETTL cords to trigger 2 Speedlights--at least in ETTL mode.  I am curious is someone has tested this however.
sek Cameras: 5D III, 5D II, EOS M  Lenses:  24-70 2.8 II IS, 24-105 f4L, 70-200 f4L IS, 70-200 f2.8L IS II, EF 300 f4L IS, EF 400 5.6L, 300 2.8 IS II, Samyang 14 mm 2.8 Flashes: 580 EX II600EX-RT X 2, ST-E3-RT
Plus lots of stuff that just didn't work for me

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #11 on: November 23, 2011, 12:20:55 PM »
Hey all,

    The main issue is to get more light on a HS football field. My 430EX works great when I can ensure that the flash trigger from the 7D will reach it. With my arm in the way, it is far from a guarantee. That is when I shoot in portrait mode, if I move the camera into landscape mode, the camera itself blocks the triggering flash.

Gary W.


I'm trying to get a visual of your setup.  If I'm understanding you correctly you have a flash mounted above your camera on a mono-pod.   You say it works when in portrait mode but not always in landscape mode.  Are you using the OC-E3 or the 7D's pop up flash to trigger the Speedlight?  I'm trying to figure out if you have a cord length issue or line of sight issue between the pop up flash to your Speedlight's sensor.

If it is a cord length issue (which I'm guessing it is not), you can purchase an extra long cord to use in place of your QC-E3.  http://ocfgear.com/ettl-cord-extra-long/
They come in 5 or 10 meter lengths.

If it is a line of site issue, you can build a mount to hold multiple Speedlights such as two and then use a 3rd Speedlight (which is connected via your OC-E3 cord) to trigger the 2 main Speedlights.  I realize this is beyond your mentioned budget but it's an option.

An excellent resource which covers what you are trying to do is covered in Syl Arena's Speedliter's Handbook: Learning to Craft Light with Canon Speedlites:
http://www.amazon.com/Speedliters-Handbook-Learning-Craft-Speedlites/dp/032171105X/ref=sr_1_1?ie=UTF8&qid=1322055433&sr=8-1

BTW, I haven't tested it but I don't think you can you use two ETTL cords to trigger 2 Speedlights--at least in ETTL mode.  I am curious is someone has tested this however.


Hey all,

    I have a 3 section Manfrotto monopod. With the camera on top, the flash is mounted on a bracket on the bottom of the top (thickest) section, below the camera.

When using the the wireless triggering built into the 7D and the flash below, my arm will block the flash on the 7D from reaching the sensor on the flash, because the light from the 7D's built in flash is what triggers the off camera flash. This is in portrait orientation. The camera body itself blocks the triggering when in landscape orientation. (I said "mode" earlier and realize that was wrong, hope it wasn't part of the source of confusion.)

Gary W.

7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #12 on: November 23, 2011, 12:45:36 PM »
Hey all,

    I only use the OC-E3 now and don't use the wireless trigger when shooting football, thought I should mention that.

Oh, yeah, @ RC, I would be using the flashes in manual mode, not ETTL.

Gary W.
« Last Edit: November 23, 2011, 12:59:27 PM by Gary W. »
7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

canon rumors FORUM

Re: Using multiple flash cords for speedlights
« Reply #12 on: November 23, 2011, 12:45:36 PM »

RC

  • 6D
  • *****
  • Posts: 607
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #13 on: November 23, 2011, 01:01:33 PM »
Hey all,

    I only use the OC-E3 now and don't use the wireless trigger when shooting football, thought I should mention that.

Gary W.

OK, so you don't need to worry about line of sight for triggering flash.  I realize you want to get the flash off the axis of your lens but since you are shooting football games (I assume at a distance), I'm not sure if it makes any real difference having your flash mounted on your camera a opposed to a bracket attached to your camera.

What are your shooting distances?
Is mounting your flash to your camera directly an option to solve your "arm in the way" problem?

If you just need more power (and light) on your subject at greater distances, consider scottkinfw previous post. 

Gary W.

  • Canon AE-1
  • ***
  • Posts: 77
    • View Profile
Re: Using multiple flash cords for speedlights
« Reply #14 on: November 23, 2011, 01:10:11 PM »
Hey all,

    The normal distance I try to shoot from is somewhere between 10-@50 yards. Beyond that, I have to crop more than I would like, and less than that, everything gets blown out.

    Using the cord solved the "arm in the way" issue.

Gary W.
7D (gripped), 70D, XSi, Canon 50mm f1.4, Canon 85mm f1.8, 18-55 kit lens, Canon 18-135 IS STM kit lens, Canon 70-300 f4-5.6 IS USM, Tamron 70-200mm f/2.8 Di VC USD, 430EX (2), 300EZ, PW  Mini TT1, PW Flex TT5 (3)

canon rumors FORUM

Re: Using multiple flash cords for speedlights
« Reply #14 on: November 23, 2011, 01:10:11 PM »