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Diving into off-camera flash photography opens up a world of exciting, new and creative possibilities. Besides giving you the option to shape and control the light in your image with a flash unit, you can also use colored gels to modify the color of your scene to add either a subtle creative touch or a more dramatic impact.
This guide will help you to get started using off-camera flash and colored gels to bring your photography to the next level!
Colored gels (sometimes called color filters or lighting gels) are thin pieces of colored transparent material. They can be fitted over the top of your flash unit to modify the color of the light.
Often, the reason for using a colored gel is to tone of the flash so that it matches the color (white balance) of the room. For example, a typical camera flash fired in a room lit by tungsten light bulbs will appear much bluer against the orange ambient background light. By covering the flash with a gel that is tinted orange, you can make the flash match the existing lighting conditions so that all sources contribute the same color to your final image.
A gel can be attached to a flash in a number of ways. Perhaps the most common method for portable flash units is with a velcro strap that wraps around the flash tube. If you’re in a real pinch, you could even simply use a piece of tape. Just make sure that the gel completely covers the flash so that it completely modifies that color of the light.
Note: Magmod makes a system to do just that – read Suzi Pratt’s overview of Magmod options here.
Gels come in a wide variety of colors and are very inexpensive, which makes it easy to get started experimenting with this fun style of photography. Also, they can continue to be used even if they are scratched or folded. You only need to replace a gel if it has a rip or a small hole.
Once you have your off-camera flash or multiple speedlight units ready, you can begin to get creative!
When getting started, one of the best ways to get a sense of how to use color gels is by taking pictures in a dark room. This gives you full control over the light throughout the scene. Creating a dark background doesn’t have anything to do with putting up black curtains or finding a wall that is painted black – it’s all about controlling where the light spills.
First, you’ll want to find a medium to large sized room. Dim the lights so that you can produce a perfectly black image without flash (available room light only). Place your subject a fair distance away from the far wall. By directing the light from your flash units only towards your subject and away from the wall behind them, you can create a completely black background.
To add just a hint of color, put a color gel only on your secondary flash. The key (main) light provides adequate lighting for the subject, while the secondary flash adds drama, intrigue, and style to the photo.
Once you’ve mastered this straight-forward style of shot, you can start to mix and match colors for unexpected and fascinating results.
Color plays an incredibly vital role in telling a story or establishing a mood. We are all familiar with typical color associations – yellow represents happiness, red represents anger, blue represents sadness, and so on.
With a variety of color choices at your fingertips, you can craft a precise feeling or mood in your images simply by adding a colored gel over your flash unit.
It is important to visualize the final image you intend to create, otherwise, your shot can quickly turn into a jumble of mismatched colors.
Remember that you can also color more than just the subject. Firing a colored flash at the background wall can instantly update it, which is perfect for adding some variety to studio-style portrait shots.
Once you start playing with color, it helps to have an understanding of how and why certain colors work better together than others.
You can apply even some basic knowledge from a color wheel to get a sense of how you can create bold and vibrant color pairs. For example, colors directly opposite each other on the color wheel are called complementary colors, as they pair together very well. Knowing this you can mix blue and orange for a dramatic shot. Many Hollywood movies use color theory to help make their footage more vivid.
Or, you can break the rules for more surprising and unexpected results!
Once you get comfortable with controlling and creating colored light, your creative options are endless. For example, you can use a flash tinted orange to recreate the glow of a sunset. You can also begin mixing and matching with ambient light conditions, which is much trickier but can be very rewarding.
You’ll be surprised how much a thin sheet of colored plastic can transform your photography!
Please share your questions, comments and images shot with colored gels below.