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Photography Question 

Aja B. Valencia
 

light placement


 
  my baby girl
my baby girl

Aja B. Valencia

 
  my baby boy
my baby boy

Aja B. Valencia

 
 

Aja B. Valencia

 
 

Aja B. Valencia

 
 

Aja B. Valencia

 
 
where exactly should lights be placed....i.e....how far away and up from a subject...like children for instance....i have added a few pics of my children( always nice to have models right on hand.) using hotlights....3 of them...i used one where I was standing one off to the right with a white sheet hanging in front of it and one on the background..should the background light be on the subject? thanks

aja b ><>


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March 13, 2008

 

Debby A. Tabb
  The Studio Photography threads will help you alot, here is part #1 there are #23:

http://www.betterphoto.com/forms/QnAdetail.php?threadID=17534

I hope this helps,
Debby Tabb


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March 13, 2008

 

Alan N. Marcus
  Hi Aja,

First let me tell you that you are doing just fine! Likely my advice will just confuse and add complexity of your studio set-up. In other words the simpler the better.

That being said: I advise you start with a three light set-up. Once mastered, expand into a more complex set-up Start with a fill lamp placed near the camera at lens height. Since the fill’s job is to soften shadows cast by the main lamp, its position should remain close to an imaginary line drawn camera to subject. OK to move fill forward or backward however keep it at lens height and as close to this line as you can. Again, this position fulfills the necessity to fill shadows from the cameras viewpoint. (From the looks of your shots, I think you are already doing this).

It is important that the fill’s intensity at the subject plane be adjusted subordinate to the main light. I suggest that you meter the subject with only the fill light on (main and background off). Note the f/number indicated by the meter. Your task will be to adjust the main so that its light arrives 100% brighter than the fill, that’s 1/f stop brighter. Now turn off the fill, turn on the main and re-measure. To adjust slide the lamps closer or further to achieve the desired 1 f/stop difference (main brighter). The f/stop sequence is f/22 – f/11 – f/16 – f/8 – f/5.6 – f/4 each is one stop difference as compared to its neighbor. Example: main at f/8 fill at f/5.6 or main at f/11 fill at f/8 etc.

If you lack the skills to meter as above, use distance to establish the 100% brightness diversity. Fill is always set more distant. Measure main to subject distance and multiply by 1.4 the result is fill to subject distance to achieves the 100% (1f/stop) difference. Example main is 8 feet from subject thus 8 x 1.4 = 11 so set the fill 11 feet from subject. Try this math again for more contrast. Main remains at 8 feet so 11 x 1.4 = 15 thus for more contrast main at 8 feet fill at 15 feet.

Main is set off to the side and high to simulate midday sun. All of your examples were very nice however note your third example where the nose shadow extends down past lips. This detraction is due to the main placement too high.

Background lamp is behind subject beamed at the background. Lamp is hidden by the subject. Background lamp distance to background establishes background intensity. You can compel the background to go dark of light by adjusting this lamp-to-background distance.

While I wrote all this, I truly believe it is wrong to set rigid rules for portrait lighting. The rules are time honored to increase sales. On the other hand art springs from the heart thus it follows no rules.

Alan Marcus (marginal technical gobbledygook)
ammarcus@earthlink.net


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March 13, 2008

 

Aja B. Valencia
  Alan,
i do agree with the setting of rigid rules...but this helps out a ton gotta have a foundation if u are to build a house correct? lol...thanks a bunch

aja b ><>


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March 13, 2008

 
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