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Methods for Overpowering the Sun
Old 06-24-2003, 06:40 AM   #1 (permalink)
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I have seen mention of "overpowering the sun" in a couple of posts and I was wondering if anyone had any technical pointers on how to do this.

Do you use a barebulb flash, softbox, umbrella? What kind of steps do you go through to determine the exposure or do you just shoot some digital until it looks the way you want? I know there is no way I would see the effects of my modeling lamps on the model out in the sunlight [img]/ubbthreads/images/graemlins/wink.gif[/img]

Of course I should just go out and try it, but I would like a starting point before paying for someone's time to sit for my practice.

Thanks for the help.
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Re: Methods for Overpowering the Sun
Old 06-24-2003, 10:51 AM   #2 (permalink)
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[ QUOTE ]
Do you use a barebulb flash, softbox, umbrella?

[/ QUOTE ]

You can use any of those that you like.

Simply put you want the flash exposure reading to be more than the exposure reading you get from metering the sun.

So if you are getting a reading of 1/250th @ f11 metering the sun then you'll want an exposure of say 1/250th @ f16 or more when you fire your flash. Exposure is determined with a flash meter.
 
 
Re: Methods for Overpowering the Sun
Old 06-24-2003, 11:30 AM   #3 (permalink)
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Newshawk, I think daylight is a more appropriate term for metering. Metering the sun, with a long telephoto especially, is not a good thing for the eyes. [img]/ubbthreads/images/graemlins/tongue.gif[/img]

-Richie
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easy way
Old 06-24-2003, 12:59 PM   #4 (permalink)
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Use the basic sunny 16 rule.
This is for bright sun, not late afternoon light.

Your basic exposure will be like f16@125th for asa 100 film. Depending on your flash sync, you would either need to pump out F22 in strobes, or if your camera syncs at 250th, then f16. You can use a polarizer to help with sky colors too, and that would bring the working exposure down to f8.

The shot below was using a profoto 2400 ws pack, in a 20 inch beauty dish, about 15 feet from the model. Exposure was somewhere near f16@1/250th on fuji NPC film. The sun was from left, the strobe to right.

Hope that helps. Just remember whatever you set the strobe to, set the camera to that, and use the shutter to control background brightness. That's in simplistic terms, but should work for most things.

Chip
 
 
Re: easy way
Old 06-24-2003, 01:14 PM   #5 (permalink)
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I find this website usefull: http://www.dg28.com/technique.html

-Richie
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Leaf Shutter.
Old 06-24-2003, 02:27 PM   #6 (permalink)
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You will find it difficult to do that without a leaf shutter camera, where you can balance flash to ambient at higher shutter speeds.

With leaf shutter, where you can shoot at 1/500 sec., it becomes possible to use the shutter to control the ambient, and the f stop to control flash to balance.

With focal plane shutters, which generally have a max. 1/250 sec, or less, synch, it is more difficult to accomplish.
 
 
Re: Methods for Overpowering the Sun
Old 06-24-2003, 03:36 PM   #7 (permalink)
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I never said that he should meter the sun with a telephoto lens...I hope I don't have to tell anyone here not to do that! Sure you can meter the sun ...with a hand held light meter...that's what I was referring to. [img]/ubbthreads/images/graemlins/crazy.gif[/img]
 
 
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