Tomorrow I’m excite to have Nicola from Nicola Herring Photography over to talk about lighting. If you aren’t familiar with Nicola’s work you have to check her out at http://nicolaherring.com/. Her newborn work is incredible as well as her wedding photography!
Mixing ambient light and flash, can be a tricky thing. The biggest hurdle that most people can get frustrated with is White Balance. The biggest white balance delima for most photographers is dealing with tungsten or incadescent lighting and trying to mix that with flash. Now I realize these aren’t amazing pictures, but I was just trying to demo a concept.
In the below image, the far left picture is shot available light only with white balance set to tungsten/incandescent(2850K). The middle image is the same camera settings, except just adding flash. The flash was a speedlight with a Rogue Flash Bender as the modifier. Notice how the flash creates a blue hue across the image. Speedlights/strobes are supposed to be white balanced for daylight approx (5500K). That’s a lot cooler than the 2850K tungsten color temperature. This can be very tricky to think about. Usually when we think of something having a higher temperature as being warmer, and something with a lower temperature as being cooler. However when it comes to light temperature the opposite of what we naturally think is true, color temperatures over 5000K are considered cool and temperatures under 3500K are warmer colors. If you really think about this you can figure it out. For example, when you light a match the flame is yellow, however when you light your gas stove the flame is blue. This is because gas burns hotter (blue) than wood (warm). Make sense?
In general it is a good practice to have all of your light sources to have the same color temperature if you want them to blend well. So in order to take a color temperature strobe from 5500K to 2850K we need to warm up the temperature of the strobe. This is where gels come in handy. CTO (Color Temperature Orange) is a standard gel that takes a daylight temperature strobe and balances it with 2850K tungsten light. The result is a constant light temperature across the image at 2850K. I know this wasn’t an exhaustive study on light, but I hope it spurs some thought and creativity.

I just threw this pic in for fun. I only took one shot, so I realize I could have made several changes. First the vase is backwards, the sticks should have been towards the back of the flowers not in front. Second, I would have picked a different gel color, but hey I was rushing around. Anyway what I wanted to demonostrate was two concepts. First concept is shooting on a gray seamless allows the addition of color into your image by putting colored gels over your stobes. This was lit with 2 strobes. The key/fill light was just a shoot through umbrella camera left at 45°. The background light was above and slightly behind the flowers without any modifier on it. The second thing I wanted you to notice is the fall off on the background light. I felt by gelling this light, it accented the fall off of a bare bulb strobe. (yeah yeah, I hear the critics saying that by gelling the strobe I’m diffusing the light, so it’s not really a bare bulb, but come on it’s close enough and get’s the point across.)


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