Not Quite What I Was Trying To Achieve

I'm a bit confused, I'm no photographer but I'd have thought all you do it set up your cam on a tripod so that the shots are always taken from exactly the same position. Take several shots with your subject in different positions, then cut them all together as one in Photoshop

The flash is too powerful and too far away from her. It's lighting up the bit of room behind the other position she's going to sit in which is then ghosting through.

I agree with the previous comment though - much easier to Photoshop this kind of composite image.

HB

You could try using a snoot (google it or try strobist.com), putting more distance between each figure or using a torch. Also, yes, lower the flash power and zoom it in.

Play around! Don't be afraid to pp raw either.

Photoshop or not, one thing you'll want to do is add a snoot to your flash. A snoot is a tunnel that you fire your flash through. It will let you aim your flash more precisely, so you won't be lighting up the whole room when you trigger your flash. You can learn more about snoots here.

Also, keep in mind that there are only two ways to adjust the power of your flash (barring filters and such) - directly adjusting the power output on the back of the flash, and adjusting the aperture on the camera. Changing the shutter speed doesn't affect the amount of light you get from the flash.

While photoshop is certainly one way of doing this, you should be able to get pretty close with one take in the camera. You'll just need to control where your light is going more precisely.

Oh, one more thing - make sure that the photograph is actually turning out black without the flash at the shutter speed and aperture you're using. Stop down the aperture if you need to get things darker.

One simple concept..... multiple exposure.

If your camera to do multiple exposures then set your camera up for that. Each time Dan moves is one photo, then a fifth for the light painting.

MadDoc said:

Thanks for the help guys,

I will try playing around tonight with lower power settings first of all and using a torch. If that is not successful then I might go out and get a snoot (great name btw). I'd rather do it in a single exposure rather than use photoshop (I just think it seems more like real photography if you use PS as little as possible).

I'll let you know if I have any success

MadDoc,

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Multiple exposure in the camera.

This is not achievable without multiple exposures or some serious trickery.

taylorwilsdon said:

This is not achievable without multiple exposures or some serious trickery.

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I agree. The OP's image is transparent because she doesn't stay in the same place for the entire exposure. She will have to underexpose the image slightly and do multiple exposures in camera to get a solid figure, then do the light painting on a separate frame as well.

Think about it - each time you flash you are exposing the area of the wall behind the woman. So you're getting 1/2 wall and 1/2 woman in your image.

Photoshop composting will allow you to "overwrite" the wall with the woman's image. You can't do it even with multiple exposure in camera UNLESS you are very careful NOT to light anything on the wall.

pprior said:

You can't do it even with multiple exposure in camera UNLESS you are very careful NOT to light anything on the wall.

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You can, and that's the idea. To properly expose for the subject, but not the hot areas in the image.