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FORUMS General Gear Talk Flash and Studio Lighting 
Thread started 07 Mar 2013 (Thursday) 08:13
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Constant Lighting question

 
huntersdad
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Mar 07, 2013 08:13 |  #1

My sister-in-law gave me some Smith Vector continous lights that she had used before. Don't really know much about continuous lighting so I'm curious about bulubs for these. The ones she has in there burn hot and are a little weak.

Can you change them out for standard daylight balanced house bulbs?


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Curtis ­ N
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Mar 07, 2013 08:31 |  #2

If they have the standard screw-in connection then you can use any bulb within the wattage specification limit of the unit. Regular incandescent bulbs will work fine. Use a white balance reference target to set your white balance and you're all set.

Compact fluorescent lamps will use less juice and produce less heat, but their discontinuous wavelength spectrum makes them unsuitable for color photography.

Continuous lighting is not a practical way to light portraits but they can be used for small product shots that allow a tripod and slow shutter speeds.


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huntersdad
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Mar 07, 2013 09:57 |  #3

Thanks Curtis. I've been using them to flood a blue wal with enough to turn it white. So far, they are decent but certainly nothing like my AB1600. They just seem weak.


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gonzogolf
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Mar 07, 2013 10:15 |  #4

huntersdad wrote in post #15687396 (external link)
Thanks Curtis. I've been using them to flood a blue wal with enough to turn it white. So far, they are decent but certainly nothing like my AB1600. They just seem weak.

The key reason we use flash :)




  
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MikeMcL
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Mar 07, 2013 10:26 |  #5

The quantity of light is much much less than with your 1600. I have used some continuous lighting for certain "ambiance" shots with wide apertures and had fine results. for actual portrait work, it certainly is a challenge.
I found that i sometimes wanted that "non-portrait" look with f/2 and a small amount of light just coming from a certain direction, like candlelight or a window.
Either way, the price is right... and they will give you more gear to experiment with. That is never bad.


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Curtis ­ N
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Mar 07, 2013 11:00 |  #6

huntersdad wrote in post #15687396 (external link)
Thanks Curtis. I've been using them to flood a blue wal with enough to turn it white. So far, they are decent but certainly nothing like my AB1600. They just seem weak.

MikeMcL wrote in post #15687486 (external link)
The quantity of light is much much less than with your 1600.

One cannot compare the power or "quantity of light" between continuous and flash light sources unless you include some duration of time in the comparison.

If you used a 5 second shutter speed, the continuous lights would easily overpower the strobes.

However, with shutter speeds that are practical for images of anything with a pulse (1/60 or faster), even a 1000w shot light won't compete with a weak strobe.


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Constant Lighting question
FORUMS General Gear Talk Flash and Studio Lighting 
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x 1600
y 1600

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