1. Understanding Colored Gels:
* What are they? Thin sheets of translucent colored plastic or gelatin that are placed over a light source. They alter the color of the light being emitted.
* Types of gels: Available in a vast array of colors.
* Corrective gels: Used to correct or balance color temperatures (e.g., CTO - Color Temperature Orange to make daylight balance with tungsten).
* Creative/Effect gels: Used for artistic effects (red, blue, green, magenta, etc.).
* ND Gels: Neutral Density Gels, used to reduce the light intensity.
* Where to buy them: Photography supply stores, online retailers (Amazon, B&H Photo, etc.).
* Mounting: Many flash units have slots or clips to hold gels. You can also use gaffer tape to secure them. Gel holders and grids (which focus the light) are also valuable accessories.
2. Planning and Preparation:
* Concept: What mood or story do you want to tell with your portrait? This will drive your color choices. Consider:
* Subject's personality: Are they energetic (warm colors)? Introspective (cool colors)?
* Theme: Is it sci-fi, fantasy, vintage, modern?
* Color psychology: Different colors evoke different emotions (red = passion, blue = calm, etc.).
* Color Palette: Plan which colors will complement each other or contrast to create a certain look. Some common pairings include:
* Complementary Colors: Colors opposite each other on the color wheel (e.g., blue and orange) create strong contrast.
* Analogous Colors: Colors next to each other on the color wheel (e.g., blue, blue-green, green) create a harmonious, subtle look.
* Triadic Colors: Three colors equally spaced on the color wheel (e.g., red, yellow, blue) provide a vibrant and balanced look.
* Lighting Diagram: Sketch out where your lights will be placed, including the lights with gels.
* Test Shots: Take test shots *before* your subject arrives to dial in the settings, position the lights, and ensure the gels are producing the desired effect.
3. Lighting Techniques with Gels:
* Single Light with Gel:
* Simple and effective. Place a single light with a gel to illuminate your subject.
* Angle: Play with the angle of the light to create shadows and highlights.
* Distance: Move the light closer or farther away to change the intensity and size of the light.
* Two Lights with Gels: A very common and versatile setup.
* Key Light (with gel): The main light source, providing the primary illumination.
* Fill Light (with gel OR no gel): A weaker light source used to fill in shadows created by the key light. The fill light can have a different color gel, or be un-gelled for a more natural look.
* Separation/Rim Light (with gel): Placed behind the subject to separate them from the background, adding a halo or rim of light. Often a contrasting color.
* Three+ Lights with Gels: For more complex and dramatic lighting.
* Use a combination of the above techniques, adding more lights to create specific effects.
* A fourth light could be aimed at the background with a gel to add color and depth.
* Background Gels: Place gels on lights aimed at the background to create colorful backdrops. Experiment with different colors and patterns.
* Combining Gels: You can stack gels on a single light to create new colors. Be aware that this will reduce the overall light output.
* Light Modifiers: Use modifiers like softboxes, umbrellas, or grids to shape and control the light from your gelled lights.
4. Camera Settings and Post-Processing:
* White Balance: Set your white balance *before* adding the gels. A daylight white balance (around 5500K) is usually a good starting point. You may need to adjust it slightly depending on the specific colors you are using. You can also set it in post.
* Aperture: Choose an aperture that gives you the desired depth of field. A wider aperture (e.g., f/2.8, f/4) will blur the background, while a narrower aperture (e.g., f/8, f/11) will keep more of the scene in focus.
* ISO: Keep your ISO as low as possible (typically ISO 100 or 200) to minimize noise.
* Shutter Speed: Adjust your shutter speed to control the overall exposure. With strobes, shutter speed primarily controls the ambient light, not the strobe light.
* Shoot in RAW: This gives you more flexibility to adjust the white balance and color in post-processing.
* Post-Processing:
* Color Correction: Fine-tune the colors to achieve your desired look.
* Dodge and Burn: Enhance highlights and shadows to add depth and dimension.
* Split Toning: Add subtle color tints to the highlights and shadows.
* Retouching: Clean up any blemishes or distractions.
5. Tips and Tricks:
* Start Simple: Begin with a single light and one gel to understand how it affects the scene. Gradually add more lights and colors as you gain experience.
* Experiment: Don't be afraid to try new things and break the rules.
* Use a Light Meter: A light meter can help you accurately measure the light output and ensure proper exposure. This is particularly useful when using multiple lights with gels.
* Diffusion: Using diffusion (like a softbox or diffusion gel) will create a softer, more flattering light.
* Distance Matters: The closer the light is to your subject, the softer the light will be. The farther away, the harder the light will be.
* Gaffer Tape is Your Friend: Gaffer tape is invaluable for securing gels, positioning lights, and solving unexpected problems.
* Practice Regularly: The more you practice, the better you'll become at using colored gels to create stunning portraits.
* Safety: Gels can melt if they are too close to a hot light source. Always use caution and monitor the temperature of the light. LED lights generate very little heat.
* Read and Watch Tutorials: There are tons of resources online about using colored gels in photography. Explore these to learn new techniques and get inspiration.
Examples of Creative Uses:
* Cyberpunk/Sci-Fi: Neon blues, pinks, and purples for a futuristic look.
* Film Noir: Dramatic reds and blues to create a sense of mystery and intrigue.
* Fantasy: Ethereal greens and golds for a magical, dreamlike feel.
* Abstract: Use bold, contrasting colors to create visually striking and unconventional portraits.
* Duotone/Monochrome: Use one gel to create a monochrome image with a specific color cast.
By understanding the principles of colored gels, experimenting with different techniques, and paying attention to detail, you can create truly unique and captivating portraits that stand out from the crowd. Good luck!