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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

 
oldvultureface
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Sep 01, 2013 14:37 |  #2386

dmward wrote in post #16257661 (external link)
I THINK it moves from the bottom to top so the shadow is at the bottom of the image.

The image on the sensor is inverted. ???




  
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dmward
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Sep 01, 2013 17:17 |  #2387

oldvultureface wrote in post #16259142 (external link)
The image on the sensor is inverted. ???

As it always is when projected thought a lens. Something we learned when composing and focusing through a view camera. :-)
That also made getting a transparency into a slide projector a challenge, upside down with flipped with emulsion away from the lamp and toward the lens.


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oldvultureface
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Sep 01, 2013 18:15 as a reply to  @ dmward's post |  #2388

Ah, I understand. I thought you meant the shutter actually travels from bottom to top. It does appear that way on the image but physically the shutter moves from top to bottom. :)




  
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Meddin ­ Studios
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Sep 02, 2013 07:56 |  #2389

Elv thanks for all the insight. That kind of changes the picture for me for Phottix kit. I may still go ahead and buy up an Odin kit to test and share the results when in a Sekonic meter setup. For now, I'm going the PW route. I added a handful of TT5's for our cheetahs and will be testing those this week. I'll post up how we work with the AC3 on one cam and Sekonic manually operating the shooter's cam. Sometimes we use an EyeFi card for going to a customer ipad while in the field, so the meter lets me make adjustments on fly after peeking frame. The 6D is good for this with the iphone app but no always reliable. I prefer the actual wifi 5D device or tethered in a studio, but thats not always the best either.

Anyone else with input for TT1's and +3's with regards to HSS and timing adjustments?




  
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Zbill
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Sep 02, 2013 16:24 |  #2390

Osiriz wrote in post #16256745 (external link)
Well your guess was right. My tests show that the reflector isn't needed inside Apollo type softboxes. At least I could not see any significant difference in the light.

His guess is wrong, and your tests must be flawed. Just because it is called "umbrella reflector" doesn't mean it's for umbrellas only. :cool:

You should use the reflector inside the octoboxes and softboxes as well, unless you are a fan of hotspots and other issues.

I'm just sayin'.




  
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Osiriz
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Sep 03, 2013 10:24 |  #2391

Zbill wrote in post #16261975 (external link)
His guess is wrong, and your tests must be flawed. Just because it is called "umbrella reflector" doesn't mean it's for umbrellas only. :cool:

You should use the reflector inside the octoboxes and softboxes as well, unless you are a fan of hotspots and other issues.

I'm just sayin'.

I assure you that my tests are not flawed. The light is just as good (if not better) when shooting without the reflector. Besides, I don't see anyone else using the reflector inside their softbox?

Just a quick example from Tetrode, a guy who obviously knows his stuff:

tetrode wrote in post #15539783 (external link)
I'm finding the CL-180 with its add-on umbrella mount along with the 90cm x 90cm softbox to be the most useful, most portable, and easiest to set up and take down combination. This is a typical configuration:

QUOTED IMAGE

There are more examples in the thread if you browse back. However, I have not compared the results inside a octangular softbox, but I really don't think the reflector is needed there either. I might be wrong, but I think the umbrella reflector is for regular umbrellas only.

My 2 cents.




  
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dmward
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Sep 03, 2013 10:55 |  #2392

I use the CLs in umbrella frame octa, square and rectangular soft boxes all the time. I've never bothered with the umbrella reflector. I position the flash tube fairly deep in the box. Tip is usually about 2 to 3 inches from the umbrella spreader locking collar.


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Zbill
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Sep 04, 2013 02:11 |  #2393

Well, if you say so. I guess I'm gonna have to redo my tests then.

I actually hope you are right. :)




  
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ZoranC
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Sep 04, 2013 19:50 |  #2394

dmward wrote in post #16264151 (external link)
I position the flash tube fairly deep in the box. Tip is usually about 2 to 3 inches from the umbrella spreader locking collar.

Are these Apollo style boxes? If yes could you please explain why you feel it is better to position them deep in the box rather than close to a diffuser? (ultimately I will have to try it out for myself but it won't hurt if I hear more in the meantime)




  
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DamianOz
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Sep 04, 2013 21:47 |  #2395

I thought I read of some who used an extension for the 360 flash tube, it fit between the tube and the flash unit to extend the tube further into the light modifier. But I cant seem to find it.

Anyone know of what part it was? or recall the post


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dmward
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Sep 04, 2013 22:05 |  #2396

ZoranC wrote in post #16268651 (external link)
Are these Apollo style boxes? If yes could you please explain why you feel it is better to position them deep in the box rather than close to a diffuser? (ultimately I will have to try it out for myself but it won't hurt if I hear more in the meantime)

Yes, Apollo knock offs.

My logic, not tested empirically for validity, is to get the flash tube in the center of the modifier. Considering the shape of most of the modifiers I have that means keeping it relatively close to the stretcher frame locking collar since the arms extending out tend to define the center of the rib's flex. Its an imprecise attempt to get the flash tube at the
reflective center of the modifier.


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dmward
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Sep 04, 2013 22:08 |  #2397

DamianOz wrote in post #16268922 (external link)
I thought I read of some who used an extension for the 360 flash tube, it fit between the tube and the flash unit to extend the tube further into the light modifier. But I cant seem to find it.

Anyone know of what part it was? or recall the post

It was the spacer that is part of the Quantum telephoto reflector kit.
Problem is that the pins on the CL tubes don't fit properly into the spacer.
I imagine there is a generic electronic part that is essentially the same. Someone just has to find it on an on-line catalog.


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dmward
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Sep 04, 2013 22:10 |  #2398

Zbill wrote in post #16266506 (external link)
Well, if you say so. I guess I'm gonna have to redo my tests then.

I actually hope you are right. :)

I never did a comparative test. Just started setting up the modifiers that way because it seemed like a good idea. :-)

I could be completely off. The light I get looks good, but who knows?


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Chad ­ D
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Sep 04, 2013 22:38 |  #2399

that was more about using the QTM zoom reflector I think ?
search the thread for quantum extender :)
I think its that agv8or guy and tetrode that did it ? had a pic of a hanger in one the way I remember it :)


OK I was curious so did a quick search :)
here is one of the posts
https://photography-on-the.net …tum+extender#po​st15853438

should get you started :)

DamianOz wrote in post #16268922 (external link)
I thought I read of some who used an extension for the 360 flash tube, it fit between the tube and the flash unit to extend the tube further into the light modifier. But I cant seem to find it.

Anyone know of what part it was? or recall the post


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DamianOz
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Sep 05, 2013 00:01 |  #2400

thanks


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A New Bare Bulb Flash Arrives
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