1. Understanding the Basics: Light, Color, and Gels
* What are gels? Gels are transparent sheets of colored plastic designed to be placed in front of a light source (strobes, speedlights, continuous lights) to change the color of the light.
* Color Theory: A basic understanding of color theory is helpful.
* Primary Colors: Red, Blue, Yellow
* Secondary Colors: Green (Blue + Yellow), Orange (Red + Yellow), Violet (Red + Blue)
* Complementary Colors: Colors opposite each other on the color wheel (e.g., Red & Green, Blue & Orange, Yellow & Violet). Complementary colors create strong contrast and visual interest.
* Analogous Colors: Colors that are next to each other on the color wheel (e.g., Blue, Blue-Green, Green). They create a harmonious and balanced look.
* Light Quality: Colored gels affect the *color* of the light, but they also slightly reduce its *intensity*. Be prepared to adjust your power settings to compensate.
* Light Source Types: Gels can be used with strobes, speedlights (flashes), and continuous lights. *Be careful with continuous lights, especially halogen, as they can generate a lot of heat and melt the gels! Use heat-resistant gels specifically designed for continuous light sources.* Strobes and speedlights are generally safer.
2. Gear You'll Need
* Colored Gels: Start with a basic set of primary colors (red, blue, yellow) and perhaps a few secondary colors (green, orange, violet). Also consider CTO (Color Temperature Orange - used to warm up a flash) and CTB (Color Temperature Blue - used to cool down a flash). Rosco and Lee Filters are popular brands.
* Gel Holders/Clips/Speedlight Grids: You need a way to attach the gels to your light source.
* Speedlights: Many speedlight brands have dedicated gel holders that attach to the flash head. You can also use rubber bands or gaffer tape (heat resistant) in a pinch. Some speedlight grids come with gel slots.
* Strobes: Strobes often have barndoors or grids that can hold gels. You can also purchase universal gel holders that attach to the front of the strobe.
* Light Stands: Essential for positioning your lights.
* Light Modifiers (Optional but recommended): Softboxes, umbrellas, reflectors, grids, snoots, etc. These help shape and control the light *before* it passes through the gel. Grids and snoots can create more focused pools of colored light.
* Trigger (for Strobes/Speedlights): A wireless trigger to fire your off-camera flash(es).
* Camera: Obviously! Shoot in RAW format for maximum flexibility in post-processing.
* Lens: Choose a lens suitable for portraits (e.g., 50mm, 85mm, or a short telephoto zoom).
* Light Meter (Optional): Helpful for precise exposure control, especially when using multiple lights.
3. Basic Lighting Setups with Gels
Here are some common and effective setups:
* Single Light with Gel (Simplest):
* Place a single light with a colored gel to one side of your subject.
* The color will wash over that side of their face, creating a dramatic and moody effect.
* Use a reflector on the opposite side to bounce some light back in and fill in the shadows if needed. You can use a silver reflector for brighter highlights or a white reflector for softer fill.
* Two Lights - One Colored, One White:
* One light with a colored gel as the key light (main light).
* Another light with no gel (or a very subtle gel, like 1/4 CTO to warm it slightly) as a fill light. This provides a more balanced look, preventing the colored light from being too overpowering. Position the fill light lower in power than the key light.
* Two Lights - Complementary Colors:
* This is a classic and visually striking technique.
* Place one light with one color (e.g., blue) on one side of your subject.
* Place another light with the complementary color (e.g., orange) on the other side.
* This creates a dynamic and visually appealing split-lighting effect. Experiment with different power ratios for each light.
* Background Color:
* Aim a light with a colored gel directly at the background to create a colorful backdrop.
* You can use multiple lights with different colored gels to create gradients or patterns on the background.
* Keep the light on your subject neutral (or use a subtle gel) to avoid overwhelming the image.
* Rim/Hair Light:
* Position a light with a colored gel behind your subject, pointing towards their head and shoulders.
* This creates a colorful rim light, separating them from the background and adding a unique touch.
* Gel on Hair Only (using snoot or grid):
* Use a snoot or grid on the gelled light so that it only illuminates the hair. This requires precise placement, but the effect can be amazing.
4. Tips and Techniques for Success
* Start Simple: Don't try to do too much at once. Master a single-light setup with a gel before moving on to more complex configurations.
* Experiment with Different Colors: Don't be afraid to try different color combinations. There are no hard and fast rules.
* Control the Light: Use modifiers (softboxes, grids, snoots) to shape and direct the light. This is especially important when using multiple lights.
* Adjust Light Power: Colored gels reduce the intensity of the light. You'll need to increase the power of your lights to compensate.
* White Balance is Key: Set your white balance *before* you start shooting. Auto white balance may get confused by the colored light. Custom white balance is ideal. If you forget, you can adjust it in post-processing, but it's easier to get it right in-camera. Consider using a gray card and setting a custom white balance based on that gray card under the gelled light.
* Shoot in RAW: RAW format allows for greater flexibility in post-processing, allowing you to fine-tune the colors and exposure.
* Use HSL Adjustments in Post-Processing: Hue, Saturation, and Luminance adjustments in your editing software (Photoshop, Lightroom, Capture One) are your best friends when working with colored gels. You can fine-tune the colors and intensity of the gels without affecting the rest of the image.
* Subtlety Can Be Powerful: You don't always need to go for extreme, saturated colors. Sometimes, a subtle wash of color can be very effective.
* Consider Skin Tones: Be mindful of how the colored light affects your subject's skin tones. Some colors can make skin look unnatural or unhealthy. Generally, warmer tones (orange, red, yellow) are more flattering than cooler tones (blue, green). However, it depends on the subject and the overall look you're going for.
* Model's Clothing and Makeup: Consider how the colors in the model's clothing and makeup will interact with the colored light. Neutral colors will work best.
* Test Shots: Take plenty of test shots to fine-tune your lighting and settings.
* Pay Attention to Shadows: Colored light can create interesting shadows. Observe how the shadows fall and adjust your lighting accordingly.
* Have Fun! Experimenting with colored gels is a great way to explore your creativity and create unique and stunning portraits.
Examples and Inspiration:
* Think about Mood and Emotion: What kind of feeling do you want to evoke? Warm colors (red, orange, yellow) tend to convey feelings of warmth, energy, and passion. Cool colors (blue, green, violet) tend to convey feelings of calmness, serenity, and mystery.
* Look at Movie Stills: Cinematographers often use colored gels to create dramatic and atmospheric lighting in films. Study movie stills for inspiration.
* Browse Photography Websites and Social Media: Search for "colored gel photography" on websites like 500px, Flickr, and Instagram for inspiration.
Safety Notes:
* Heat: As mentioned before, *be extremely cautious* with continuous lights as they can generate a lot of heat. Use heat-resistant gels and keep them a safe distance from the light source.
* Eye Safety: Avoid shining bright lights directly into your subject's eyes. Use softboxes or umbrellas to diffuse the light.
By understanding the basics, experimenting with different techniques, and paying attention to detail, you can use colored gels to create truly unique and captivating portraits. Good luck and have fun!