1. Understanding the Basics: What are Gels and Why Use Them?
* What are Gels? Thin sheets of transparent colored plastic (usually polycarbonate or polyester) that you place in front of a light source to change the color of the light.
* Why Use Them?
* Creative Expression: Completely alter the mood and feel of your portraits.
* Color Harmony & Complementary Colors: Enhance skin tones, draw attention to specific areas, or create visually pleasing color combinations.
* Separation & Drama: Separate your subject from the background, highlight features, or add dramatic lighting.
* Correcting Color Temperature: Use CTO (Color Temperature Orange) or CTB (Color Temperature Blue) gels to match the color temperature of your light source to the ambient light.
* Fun! Experiment and push your creative boundaries.
2. Essential Equipment:
* Gels: Buy a gel kit containing a variety of colors. Rosco and Lee Filters are popular brands. Start with a basic set and expand as needed. Common colors include:
* Red, Orange, Yellow: Warmth, energy, passion.
* Blue, Green, Purple: Coolness, mystery, drama.
* Pink, Magenta: Playfulness, romance, neon effects.
* CTO (Color Temperature Orange): Converts daylight to tungsten balanced light.
* CTB (Color Temperature Blue): Converts tungsten to daylight balanced light.
* Light Source:
* Strobes/Flashes: Speedlights or studio strobes are ideal. Make sure your light supports using gels.
* Continuous Lighting: LED panels or tungsten lights can also be used, but be mindful of heat, especially with tungsten. Use heat-resistant gels for tungsten lights.
* Gel Holders/Clips: These attach to your light source to hold the gels in place. Many strobes have built-in gel holders or you can use simple clips.
* Light Stands: To position your lights.
* Modifiers (Optional but highly recommended):
* Softboxes: Create soft, diffused light.
* Umbrellas: Another way to diffuse light.
* Snoots: Focus light into a small, concentrated area.
* Grids: Control light spill and direction.
* Light Meter (Optional): Helpful for accurately measuring light output.
* Camera with Manual Control: Essential for fine-tuning your settings.
3. Key Lighting Setups with Gels:
Here are a few starting points. Experiment and modify these to fit your vision:
* Single Light with Gel:
* Placement: Position the light to the side of the subject or slightly behind them for a rim light.
* Purpose: Simple way to introduce color and create a single-color portrait.
* Example: A blue gel for a cool, moody feel.
* Two Lights with Complementary Gels:
* Placement: One light on each side of the subject.
* Purpose: Creates dynamic portraits with contrasting colors. Examples:
* Red/Cyan (Blue-Green): A classic combination for dramatic portraits.
* Yellow/Blue: High contrast and visually interesting.
* Orange/Teal: Popular cinematic look.
* Example: Position one light with an orange gel to create warm highlights on one side of the face, and a teal (blue-green) gel on the other side to create cooler shadows. This creates a visually striking contrast.
* Key Light (White/Neutral) + Background Gel:
* Placement: A key light illuminates the subject, and a second light with a gel is pointed at the background.
* Purpose: Creates separation between the subject and the background. Useful for simple backgrounds.
* Example: Use a white or slightly warm key light on the subject and a blue gel on a white background to create a cool, contrasting effect.
* Rim Light with Gel:
* Placement: Place one or two lights behind the subject with gels.
* Purpose: Creates a colorful halo around the subject, emphasizing their shape and separating them from the background.
* Example: Use a red gel behind the subject to create a dramatic rim light effect.
* Split Lighting with Gels:
* Placement: One light directly to the side of the subject, equipped with a gel.
* Purpose: Creates a dramatic portrait with half the subject lit with color, the other half in shadow.
* Example: A red gel to emphasize dramatic features.
4. Tips and Techniques for Success:
* Start Simple: Don't overwhelm yourself with too many lights or complex setups initially.
* Gel Placement Matters: Ensure the gel completely covers the light source to prevent color inconsistencies.
* Light Ratios: Control the intensity of each light to balance the colors. A stronger light will dominate the color mix.
* White Balance: Set your camera's white balance *before* adding gels. If you're using a single color, you can try setting a custom white balance using that color, but often the most accurate results will be achieved by setting your white balance with no gels, and then adjusting in post.
* Test Shots: Take plenty of test shots to see how the colors are interacting and adjust your settings accordingly.
* Power Settings: Start with low power on your strobes and gradually increase until you achieve the desired effect. High power can burn out gels quickly.
* Modifier Choices: Consider how the modifier affects the color. Bare bulb (no modifier) will give you the most direct and saturated color. A softbox will diffuse the color.
* Skin Tone Considerations: Certain colors complement different skin tones. Generally, warmer skin tones pair well with warm colors (reds, oranges, yellows) and cooler skin tones with cool colors (blues, greens, purples). Experiment to see what looks best.
* Underexpose Slightly: Colored gels reduce the light output, so you may need to increase your ISO or widen your aperture slightly. Often, underexposing slightly will deepen the color saturation.
* Post-Processing: You can further refine the colors and tones in post-processing using software like Adobe Photoshop or Lightroom. Adjust white balance, contrast, and color saturation.
* Embrace Experimentation: There are no hard and fast rules. The best way to learn is to try different combinations and see what works for you.
* Model Communication: Clearly communicate your vision with your model so they understand the mood and emotion you're trying to create. Their pose and expression can complement the colors.
* Backgrounds: Experiment with different backgrounds. A plain white background can be easily transformed with gels. Dark backgrounds can absorb light and create a more dramatic effect.
5. Common Mistakes to Avoid:
* Not securing gels properly: Use proper gel holders or clips to prevent gels from falling off and potentially damaging your lights.
* Overpowering colors: Start with subtle colors and gradually increase the intensity. Overly saturated colors can look unnatural.
* Ignoring skin tones: Be mindful of how the colors affect your subject's skin.
* Incorrect White Balance: Can lead to inaccurate color rendition.
* Forgetting to test: Always take test shots to check your lighting and colors.
* Over-editing: Avoid over-saturating the colors in post-processing.
Example Portrait Concepts:
* Cyberpunk: Red and blue gels, futuristic clothing, dark background.
* Romantic: Pink and purple gels, soft lighting, flowing fabrics.
* Noir: Deep blues and greens, harsh shadows, dramatic poses.
* Fantasy: Pastel colors, dreamlike expressions, flowing hair.
* Horror: Red and green gels, unsettling poses, dark environment.
In Conclusion:
Using colored gels in portrait photography opens up a world of creative possibilities. By understanding the basics of color theory, lighting techniques, and equipment, you can create unique and visually stunning images. Remember to experiment, have fun, and develop your own signature style.