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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 26 Jan 2013 (Saturday) 10:20
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A New Bare Bulb Flash Arrives

 
agv8or
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Apr 25, 2013 21:04 |  #1096

dmward wrote in post #15867788 (external link)
Would be fun to see how effective the tele reflector is in H mode with the sun.

Those two stops would be a real benefit.

I hoped to get around to that as well as I am curious myself.


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tetrode
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Apr 25, 2013 21:39 |  #1097

agv8or wrote in post #15867814 (external link)
I hoped to get around to that as well as I am curious myself.

I just snagged a new style Quantum QF63S tube spacer on eBay. Hopefully, it will turn out to be identical to yours and the CL-180/360 flashtubes will fit. Got my fingers crossed!




  
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dmward
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Apr 25, 2013 21:50 |  #1098

The tele extender would have been useful here.
The CL-180 was in H mode and at full power.
Playful couple decided to dance with the statuary since there was no water in the fountain.

That meant the CL-180 was at least 10 feet away.

1/640 F5.0 ISO 100. Naturally there is processing, the sun was bright and behind them. The extra two stops would be nice.


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Gareth ­ O'Neill
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Apr 26, 2013 00:23 |  #1099

bobbyz wrote in post #15867807 (external link)
Wouldn't tele reflector only light very small part of the subject?

The tele reflector is designed to be used with super tele lenses with very narrow fields of view. The coverage will depend on your subject distance and subject, but in many cases will cover the whole shot. Think or a soccer player on a field and you'll see where this could be useful.


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Gareth ­ O'Neill
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Apr 26, 2013 01:19 |  #1100

dmward wrote in post #15867959 (external link)
The tele extender would have been useful here.
The CL-180 was in H mode and at full power.
Playful couple decided to dance with the statuary since there was no water in the fountain.

That meant the CL-180 was at least 10 feet away.

1/640 F5.0 ISO 100. Naturally there is processing, the sun was bright and behind them. The extra two stops would be nice.

I would hazard a guess that this shot would have been better in closer with a wider lens anyway, rather than further away with with the tele reflector.


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Apr 26, 2013 08:11 |  #1101

Can somebody tell what the bare bulb (no reflector) min and max out put of the CL-180 is at 10 feet, that would be with the bulb facing either straight up or straight down? I'm thinking about using this or the CL-360 to mimic a bare light bulb for environmental type shots.

Thanks


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Gareth ­ O'Neill
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Apr 26, 2013 15:06 as a reply to  @ windpig's post |  #1102

I don't understand what sort of "out put" measurement you are after. The specs are all on the site.


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Apr 26, 2013 15:38 |  #1103

Maybe I'm blind. GN specs are with the reflector. I'm looking for a meter reading with the bulb either up or down measured 10ft away. I'm look for the look of a bare light bulb hanging in a socket on the ceiling or a table lamp.


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Apr 26, 2013 16:36 |  #1104

windpig wrote in post #15869058 (external link)
Can somebody tell what the bare bulb (no reflector) min and max out put of the CL-180 is at 10 feet, that would be with the bulb facing either straight up or straight down? I'm thinking about using this or the CL-360 to mimic a bare light bulb for environmental type shots.

Thanks

Here is a quick setup in a large hanger, stepped off the 10 feet.

Bare Bulb straight up @ ISO 100 at 10 feet
1/1: f/5.0
1/4: f/2.2
1/16: f/1.3
1/64: f/.8
1/128: f/.6

With Quantum Bare Bulb Enhancer @ ISO 100 at 10 feet
1/1: f/5.6
1/4: f/2.8
1/16: f/1.6
1/64: f/.8

With Cheetah Reflector @ ISO 100 at 10 feet
1/1: f/14.2
1/4: f/7.1
1/16: f/3.6
1/64: f/1.6


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Apr 26, 2013 17:22 |  #1105

Rand, much appreciated. Me thinks the CL-360 may be the direction I'll go.


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Apr 26, 2013 17:25 |  #1106

Has anyone been using the CL-180 / CL-TX/RX / Cells II with the 5D Mark III? I didn't have any issues before I upgraded, but now with the 5DIII I can't get a clean shot @ 1/200 shutter speed. It's decent at 1/160, but completely clean @ 1/125. I've tried different batteries in the triggers.

Using Cactus V5's I have the same exact issue.

Using 5DIII / V5's with my PCB gear, I have no issues hitting 1/200.


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Apr 26, 2013 18:07 |  #1107

silvrbullet wrote in post #15870783 (external link)
Has anyone been using the CL-180 / CL-TX/RX / Cells II with the 5D Mark III? I didn't have any issues before I upgraded, but now with the 5DIII I can't get a clean shot @ 1/200 shutter speed. It's decent at 1/160, but completely clean @ 1/125. I've tried different batteries in the triggers.

Using Cactus V5's I have the same exact issue.

Using 5DIII / V5's with my PCB gear, I have no issues hitting 1/200.

My understanding is that the current version of the Cells II does not work well with the 5D mIII so I have not even tried it. I use my 5D mII when using the Cells II transmitter and I have no problem syncing at 1/320 outside in sunlight with fill flash and 1/200 inside.

EDIT: Just checked my 5D mIII with the Cells II, CL-rx and CL-180 and I can sync up to 1/200. When I try to use HS sync with the 5D mIII it will set the shutter speed back to 1/200 so it seems that HS sync is not possible with the 5D mIII and Cells II.


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dmward
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Apr 26, 2013 20:45 |  #1108

silvrbullet wrote in post #15870783 (external link)
Has anyone been using the CL-180 / CL-TX/RX / Cells II with the 5D Mark III? I didn't have any issues before I upgraded, but now with the 5DIII I can't get a clean shot @ 1/200 shutter speed. It's decent at 1/160, but completely clean @ 1/125. I've tried different batteries in the triggers.

Using Cactus V5's I have the same exact issue.

Using 5DIII / V5's with my PCB gear, I have no issues hitting 1/200.

Cells-II does NOT support H mode with 5DIII. Edward has Godox working on an update for the firmware. When the test unit arrives I am going to do a through test.

I found that the YN-622 will work with the 5DIII and CL-180 to deliver H mode FP sync. That's what I used for the shot in an earlier post.


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Apr 26, 2013 20:59 |  #1109

Gareth ONeill wrote in post #15868357 (external link)
=Gareth O'Neill;15868357]The tele reflector is designed to be used with super tele lenses with very narrow fields of view. The coverage will depend on your subject distance and subject, but in many cases will cover the whole shot. Think or a soccer player on a field and you'll see where this could be useful.

I was referring to Dave's post where he wants to use to increase light on the subject when in full sun.


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Apr 26, 2013 21:07 |  #1110

windpig wrote in post #15869058 (external link)
Can somebody tell what the bare bulb (no reflector) min and max out put of the CL-180 is at 10 feet, that would be with the bulb facing either straight up or straight down? I'm thinking about using this or the CL-360 to mimic a bare light bulb for environmental type shots.

Thanks

Ralph, I did a brief test for you this evening with the 360. My results are not comparable to Rand's as I don't have a hangar at my disposal :-) Instead, I tested in my living room which measures about 13' x 18' with 8-1/2' ceilings.

With the 360 on a lightstand with the tube pointed straight up and approximately 1-1/2' from the ceiling, bare tube, camera at ISO 200, I metered the following at a 10' distance from the lightstand:

1/1 f/11.1
1/2 f/8.0.1
1/4 f/5.6.1
1/8 f/4.0.1

Notice the perfect power tracking. The setup looked like this:

IMAGE: http://f.cl.ly/items/0q2Q2G2F1B1u2r0k3I2b/Godox_360_Bare_Bulb_Test_1.jpg

One thing worth mentioning is that I've found I get much more flattering light in a setup like this when I stick the Quantum QF63 telephoto reflector on the flash but without the tube spacer:

IMAGE: http://f.cl.ly/items/2g2f3Y2A2l2X1K3r0j3O/Godox_360_Bare_Bulb_Test_3.jpg

IMAGE: http://f.cl.ly/items/2J3N0k0g3F2e072Z3d2J/Godox_360_Bare_Bulb_Test_5.jpg

I figure maybe a stop and a half's worth of light is lost shooting this way as opposed to truly bare bulb but the light is just so much softer. Look at this comparison. Figure on the left shot with the naked flashtube. Figure on the right with the QF63 reflector:

IMAGE: http://f.cl.ly/items/0q2Q2G2F1B1u2r0k3I2b/Godox_360_Bare_Bulb_Test_2.jpg

The only thing that changed between the shots was the addition of the telephoto reflector. This shows where my little friend was in relation to the flash:

IMAGE: http://f.cl.ly/items/1y1c2C1B09413c2f0N0b/Godox_360_Bare_Bulb_Test_4.jpg

With all of the light now indirect as it's bounced off the ceiling, the soft shadows are not an unexpected result. The caveat, though, is that ceiling bounce can produce unattractive shadows under the eyes. I haven't experienced that effect yet but the potential is certainly there. It would be interesting to try this experiment again with a wide angle reflector but I believe the closest thing to a WA reflector for the 180/360 would be the umbrella reflector. For now, I'd say the Quantum QF63 does a *very* good job.



  
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A New Bare Bulb Flash Arrives
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