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DPChallenge Forums >> Photography Discussion >> Studio Lighting Headaches
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05/14/2009 08:13:00 PM · #1
Hey guys,
I am shooting a friends head shots this weekend and I would like to use my lighting equipment to help. I have two SP Studio System Lights(SPS100) with an umbrella and a diffusing box. I have tried everything to control the light coming out of there; bouncing it off walls, using the umbrella, using the diffusing box, using the light and the diffusing box together but it just keeps white washing my subjects out. I think it was made more for selling items where you don't want any shadows as opposed to portrait work.

Is it possible I'm just using it wrong?
Is there a way to control the intensity?
Does someone have a users manual on these things?

Please help, my lighting is giving me headaches!!!
05/14/2009 09:28:10 PM · #2
Post some examples with EXIF info intact.

Faster shutter speed might help.
05/14/2009 10:00:10 PM · #3
Looking at their site, I think you are out of luck with adjusting it. The next model up is Variable.

I'm with Faidoi, faster shutter and/or smaller aperture.

Interesting concept on that light module...it just screws into a standard socket?

Also, are you triggering with the cord they provide or flash on camera?

Message edited by author 2009-05-14 22:03:49.
05/14/2009 10:00:56 PM · #4
yes--some shots with exif would help a lot.

agreed--shoot at the fastest flash sync you can on the d50 (probably 1/200 or 1/160) to bring down the ambient lighting, and adjust your aperture for the flash exposure control until you get it. Then you can open the shutter longer if needed to bring in ambient light

Start simple--one light with umbrella or diffusing box, and you can use reflectors or white foam core to fill.

Once you have established control over your lighting/exposure, a really nice light for headshots is to bring the umbrella (if it is a shoot thru) in as close as possible to the subject without getting in the frame--just up a bit, off to one side and to the front. If the light is 1 foot away from the subject, the inverse square law is really noticeable: pull it back to 2 feet, and the light drops by a factor of 4. (If your strobe is 15 feet away, and you move it 1 foot, not much difference there)
05/14/2009 10:11:55 PM · #5
Originally posted by awpollard:



Also, are you triggering with the cord they provide or flash on camera?


I trip it with a flash that I have on the hot shoe, which probably isn't helping matters any. I want to go and get a sync coord tomorrow to see if it helps any.
I will try to post something up tomorrow.
05/14/2009 10:32:28 PM · #6
shutter speed controls ambient light, aperture controls flash.
distance from light to the subject can also be used to control the amount of light - inverse square law applies.
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