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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 21 Jun 2011 (Tuesday) 21:09
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Does this exist?

 
Erik_L
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Jun 21, 2011 21:09 |  #1

I just had an idea while I was driving... Does anyone make a small, self contained flash module that would screw into a standard 120v edison mount bulb-socket that is maybe triggered via optical slave and has some sort of power-output adjustment? I'd love to be able to light scenes using the fixtures already available, without having to stick a speedlite inside/near/behind each fixture.

Please let me know!


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sigma ­ pi
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Jun 21, 2011 21:16 |  #2

so this is suppose to take the place of dragging the shutter and using films to adjust the strobe?

This invention would make the Fong light sphere useful!


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krb
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Jun 21, 2011 21:18 |  #3

an interesting idea


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FlashZebra
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Jun 21, 2011 21:19 |  #4

Erik_L wrote in post #12635715 (external link)
I just had an idea while I was driving... Does anyone make a small, self contained flash module that would screw into a standard 120v edison mount bulb-socket that is maybe triggered via optical slave and has some sort of power-output adjustment? I'd love to be able to light scenes using the fixtures already available, without having to stick a speedlite inside/near/behind each fixture.

Please let me know!

Like this, note these units are very low power.

http://www.bhphotovide​o.com …+II&N=0&Initial​Search=yes (external link)

or

http://shop.ebay.com/i​.html?_nkw=ac+slave+fl​ash (external link)

These have been around for years, and the same basic unit is available under many different brand names.

Enjoy! Lon


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Erik_L
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Jun 21, 2011 21:27 |  #5

FlashZebra, precisely! FYI, I love Flash Zebra, my super-long TTL cord still serves me sometimes :)

I basically wanna do some shots that utilize the character of something like a desk lamp... nothing produces "desk-lamp type light" like a desk lamp :)

Only question now is whether this one has an optical trigger, or only PC?

http://www.amazon.com …ics&qid=1308709​907&sr=8-1 (external link)


Canon EOS 1D III
Manfrotto 190X Pro B w/324RC2 "Action Head" | Canon 580EX II
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sigma ­ pi
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Jun 21, 2011 23:17 |  #6

WOW for that cheap I would do that. A lot easier.


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The ­ Loft ­ Studios
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Jun 21, 2011 23:39 |  #7

Erik_L wrote in post #12635715 (external link)
I just had an idea while I was driving... Does anyone make a small, self contained flash module that would screw into a standard 120v edison mount bulb-socket that is maybe triggered via optical slave and has some sort of power-output adjustment? I'd love to be able to light scenes using the fixtures already available, without having to stick a speedlite inside/near/behind each fixture.

Please let me know!

Yes they do make these flashes, they're called AC Powered Strobes. However, they are not adjustable in power and can cost anywhere from $20 up to $60.....


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Erik_L
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Jun 22, 2011 07:34 |  #8

The Loft Studios wrote in post #12636539 (external link)
Yes they do make these flashes, they're called AC Powered Strobes. However, they are not adjustable in power and can cost anywhere from $20 up to $60.....

Yup, this has already been answered. Thanks.


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tetrode
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Jun 22, 2011 08:47 |  #9

Erik_L wrote in post #12635815 (external link)
FlashZebra, precisely! FYI, I love Flash Zebra, my super-long TTL cord still serves me sometimes :)

I basically wanna do some shots that utilize the character of something like a desk lamp... nothing produces "desk-lamp type light" like a desk lamp :)

Only question now is whether this one has an optical trigger, or only PC?

http://www.amazon.com …ics&qid=1308709​907&sr=8-1 (external link)

Yes, that unit does have an optical sensor. However, the product specs mention a 50-degree beam spread. If you're going to be using these in desk lamps, you might want a flash with wider dispersion such as this Morris unit:

http://www.adorama.com​/MRACWS.html (external link)

This one also has an optical trigger.

Dave F.




  
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shankarhokie
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Jun 22, 2011 09:26 as a reply to  @ tetrode's post |  #10

THis one has BOTH PC connection AND optical slave

http://www.adorama.com​/LTACMS.html (external link)

It fires consistently as an optical slave.. but the output is fixed


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ben_r_
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Jun 22, 2011 12:09 |  #11

Interesting idea. I can see where such units might be useful, but not being able to control their power output could be a pain too...


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TuanTime
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Jun 22, 2011 12:37 as a reply to  @ ben_r_'s post |  #12

I learned something new from this thanks. I never knew these existed either. I'm not sure how I would use them but it's good to know anyways.




  
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Csae
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Jun 22, 2011 17:29 |  #13

tetrode wrote in post #12638221 (external link)
Yes, that unit does have an optical sensor. However, the product specs mention a 50-degree beam spread. If you're going to be using these in desk lamps, you might want a flash with wider dispersion such as this Morris unit:

http://www.adorama.com​/MRACWS.html (external link)

This one also has an optical trigger.

Dave F.

I've actually checked those out in the past to make custom light fixtures...

The 5seconds recycle time showed me the door with a boot on my arse. The fasters ones seem to be more focused so theres not as much point in them either.


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dmward
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Jun 22, 2011 19:03 |  #14

I have 4 or 5 of these. They are slow to recycle. The cover screws off so its possible to put some diffusion material onto them to spread the light a bit.

I look at them as special purpose tools.

The idea of putting them in a desk lamp would probably work unless you need a significant light.

Remember, 21Ws isn't much light but then again if its a foot from the subject is might be too much.

I have to turn my Einsteins down to 2.5 Ws in a 54" PLM with diffusion front panel when shooting flowers if I want to be at F2.8 That's at ISO 100 on a 5DII.

These little items can be useful but adjustability is limited to distance from subject they are lighting or using something to cut the light.


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Benji
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Jun 22, 2011 19:03 |  #15

I've used and worn out several of the Morris Bare Bulb Slave units. I love 'em. To decrease the power by one stop simply take a white cloth and a rubber band and cover the dome. Two layers equals two stops.

Benji




  
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Does this exist?
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