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FORUMS Photography Talk by Genre Architecture, Real-Estate & Buildings Talk 
Thread started 03 Mar 2018 (Saturday) 16:51
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Using studio flash lights without a backdrop

 
Beckhall
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Mar 03, 2018 16:51 |  #1

I am doing an indoor shoot tomorrow of my friend and a dog. We have to do it mid afternoon and inside. There is a large window shining into the room but because of the time of day I'm worried we won't have enough light. I have a flash gun which I can experiment with. Also I have a fast lens but I need larger DOF in some shots. I can take 2 studio flash lights but I can't figure out if this is going to work without a backdrop. I haven't been able to check location out. If I light up subject with studio flash lights in a large room then the background will be dark unless I slow down shutter speed right?....I'm really confusing myself. Any advice please? Some shots I need about 20-30cm DOF and other shots up to a metre. The idea is to capture a canine therapist working within a home environment so a backdrop isn't going to help achieve this.




  
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Wilt
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Mar 03, 2018 18:15 |  #2

First of all, think of f stops as distance.
The light intensity at 4 ft to subject is 4 times as strong as the light intensity at 8ft light to background, f/4 vs. f/8 is -2EV.
So if you are standing 4 feet from your subject, and 11 feet from your background, the background will be almost totally black due to the Inverse Square fall-off of light intensity
...unless your ISO and shutter and aperture will capture sufficient ambient lighting to capture the background brighter.


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Left ­ Handed ­ Brisket
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Mar 03, 2018 19:53 |  #3

So you DO want the background in the shot?

One light for the subject, and if you need more light on the background, use the other light for fill.


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Beckhall
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Mar 04, 2018 03:23 as a reply to  @ Wilt's post |  #4

So helpful, thank you




  
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Beckhall
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Hatchling
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Mar 04, 2018 03:26 as a reply to  @ Left Handed Brisket's post |  #5

Yes, I do. Great, thank you!




  
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Using studio flash lights without a backdrop
FORUMS Photography Talk by Genre Architecture, Real-Estate & Buildings Talk 
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