1. Understanding Color Gels
* What are they? Thin sheets of translucent colored plastic (usually made of polyester) that are placed in front of a light source.
* Purpose: To change the color temperature and/or hue of the light illuminating your subject.
* Types: Come in a wide variety of colors, from deep reds and blues to subtle tints and color correction filters.
* Where to get them: Photography stores, online retailers (Amazon, B&H Photo), theater supply stores. Rosco and Lee Filters are popular brands.
* Cost: Relatively inexpensive, especially gel filter packs. Gel holders and speedlite attachments add to the cost.
2. Essential Gear
* Speedlights/Strobes: You need a light source to put the gel on. Speedlights (flashes) are often used for portraiture due to their portability and affordability. Strobes (studio lights) offer more power and control.
* Gels: A selection of colors. Start with a basic pack that includes primary and secondary colors (red, blue, green, yellow, orange, purple).
* Gel Holders/Attachments: To securely attach the gels to your lights. Options include:
* Speedlight Gel Bands/Straps: Elastic bands or Velcro straps that hold the gel against the front of the flash head.
* Gel Holder Systems: More robust systems with magnetic or clamp-on attachments for speedlights and strobes. They often include grids and snoots for light control.
* Clothespins/Gaffer Tape: A simple, but less elegant, solution for attaching gels. Use gaffer tape (not duct tape!) as it doesn't leave sticky residue.
* Light Stands (Optional but Recommended): To position your lights at various angles and heights.
* Modifiers (Optional but Recommended): Softboxes, umbrellas, beauty dishes can diffuse the light, creating softer shadows and more flattering light on your subject.
* Light Meter (Optional): Helps you accurately measure the light output and determine the correct exposure.
* Camera with Manual Mode: Essential for controlling aperture, shutter speed, and ISO.
* Reflector (Optional): To bounce light and fill in shadows.
* Model: Someone willing to experiment!
3. Fundamental Techniques
* Safety First: Always use gels designed for photography lights. Regular plastic can melt or catch fire under the heat of a strobe. Never leave lights unattended with gels attached.
* Start Simple: Begin with one light and one gel to understand how the color affects the scene.
* Color Temperature: Be aware that some gels are designed to correct color temperature (e.g., CTO - Color Temperature Orange - to warm up light, CTB - Color Temperature Blue - to cool down light). These are often used to balance flash with ambient light.
* Diffusion: Use modifiers (softboxes, umbrellas) to diffuse the colored light, creating softer and more even illumination. Shooting the gelled light through a diffusion panel can also help.
* Distance: The distance of the light from your subject affects the intensity of the color. Closer = stronger color.
* Angle: The angle of the light also affects the shadows and highlights created by the colored light.
* Exposure: Colored gels reduce the amount of light reaching your camera sensor. You'll need to compensate by:
* Increasing ISO.
* Widening the aperture (lower f-number).
* Slowing down the shutter speed.
* Increasing the power of your light(s).
* White Balance: Set your white balance *after* adding the gels. Auto white balance may struggle and give inaccurate results. Experiment with different white balance settings (e.g., Tungsten, Fluorescent) to achieve the desired look. Custom white balance is often the best option, using a grey card as a reference point.
* Shooting in RAW: Shooting in RAW gives you more flexibility to adjust white balance and color in post-processing.
4. Creative Approaches & Ideas
* One-Light Color: Use a single gelled light as the primary source of illumination. Experiment with different colors and angles to create dramatic effects.
* Two-Light Setup (Complementary Colors): Use two lights, each with a different colored gel, placed on opposite sides of your subject. Complementary colors (e.g., red and green, blue and orange) create striking contrasts. This is a classic technique.
* Two-Light Setup (Similar Colors): Using two similar colors like blue and purple, or yellow and orange can create a more subtle, cohesive look.
* Rim Light: Use a gelled light behind your subject to create a colored rim light, separating them from the background.
* Background Color: Gelled lights can be used to color the background, adding depth and dimension to your portraits. A black or white backdrop works best.
* Split Lighting: Light one side of the face with one color, and the other side with another. This creates a dramatic, graphic look.
* Colored Shadows: Use a main light source and then a second gelled light to create colored shadows.
* Gobo Effects: Combine gels with gobos (metal stencils) to project patterns and shapes onto your subject or background.
* Color Grading in Post-Processing: Use Photoshop or Lightroom to further refine the colors and tones in your images.
5. Color Theory Basics for Portraiture
* Complementary Colors: Colors that are opposite each other on the color wheel (e.g., red/green, blue/orange, yellow/purple). They create high contrast and visual interest. Great for dramatic portraits.
* Analogous Colors: Colors that are next to each other on the color wheel (e.g., blue/green, yellow/orange, red/purple). They create a harmonious and calming effect. Good for softer, more subtle portraits.
* Triadic Colors: Three colors that are equally spaced apart on the color wheel (e.g., red/yellow/blue). They create a vibrant and balanced color scheme.
* Warm vs. Cool Colors: Warm colors (red, orange, yellow) evoke feelings of warmth, energy, and excitement. Cool colors (blue, green, purple) evoke feelings of calmness, serenity, and sadness. Consider the mood you want to create.
6. Practical Tips
* Test Shots: Take plenty of test shots to dial in the exposure, white balance, and light placement.
* Experiment! Don't be afraid to try different colors, combinations, and techniques. There's no right or wrong answer – it's all about your creative vision.
* Pay Attention to Skin Tones: Be mindful of how the colored light affects your subject's skin tone. Some colors can make skin look unnatural or unhealthy.
* Subtlety vs. Boldness: You can use gels for subtle color washes or for bold, dramatic effects. Adjust the intensity of the color by moving the light closer or further away from the subject, or by stacking multiple gels.
* Model Feedback: Communicate with your model and ask for their feedback. Ensure they are comfortable with the lighting and color.
* Practice: The more you practice, the better you'll become at understanding how colored gels affect light and how to use them to create stunning portraits.
* Keep it Clean: Gels can attract dust and fingerprints. Keep them clean with a microfiber cloth. Replace them when they become scratched or damaged.
7. Inspiration and Ideas
* Browse Photography Websites and Magazines: Look for examples of portraits using colored gels.
* Study the Work of Famous Photographers: Many photographers have used colored gels to great effect.
* Experiment with Different Themes and Concepts: Try using gels to create portraits with a specific theme, such as cyberpunk, futuristic, fantasy, or retro.
By following these tips and techniques, you can use colored gels to create unique and creative portraits that stand out from the crowd. Good luck, and have fun experimenting!