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Photography Question 
Nadil khan
 

Is 300 watt sec. of power reflected off an umbrell


Is 300 watt sec. of power reflected off an umbrella enough to take full length group shots?


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9/5/2006 4:37:27 PM

 
Mark Feldstein
BetterPhoto Member Since: 3/17/2005
  Nope. Not even for a very very teeny teeny tiny little group, say a group of two. Your umbrella effectively reduces your 300 w/s to about 1/2 that and 150 W/s of light is about the amount of a single hairlight working off a pack system. 300 W.S. might be enough to shoot a headshot portrait without the modifier, i.e., the umbrella or even a softbox, if you don't mind working at about f3.5 or possibly 4.0 at iso 100.

Take it light.
Mark


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9/5/2006 5:48:44 PM

 
Nadil khan   Thank you, I think am going to have to purchase more lighting


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9/5/2006 6:55:45 PM

 
Mark Feldstein
BetterPhoto Member Since: 3/17/2005
  If you're doing this type of work a lot, then sure, having some lighting with some real horsepower under the hood would be an asset to your shooting capabilities. My own preference for portraits is to use a single monolight (Bowens) that provides a maximum output of 1500 w/s. I use that in a Chimera 3x4 foot softbox with a plain white interior. With the softbox, its output is reduced to about 1000 w/s and let's me work at a distance from the subject of about 13-15 feet and between f11-f16 with ISO 250 film.

Even two lights with an umbrella, each at 1000 w/s should be a huge improvement over what you've got. Take a look at monolights at bhphotovideo.com (My own preference is Bowens as I said) or Calumetphoto.com offers Traveler monolights that are made by Bowens under the Calumet label.
Essentially, Nadil, to shoot groups, even small ones, it helps to have the additional light that will give you an increase in your depth of field and slower ISOs.
Okie dokie? Anything else, just let us know. ;>)
Mark
Mark


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9/5/2006 8:23:41 PM

 
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