1. Understanding the Basics
* What are Colored Gels? These are transparent sheets of colored plastic (typically acetate or polycarbonate) that are placed in front of a light source (flash, strobe, or even a continuous light) to change the color of the light.
* Why Use Them?
* Mood and Atmosphere: Gels can evoke emotions and set the tone of your portrait. Cool blues can create a sense of calm or sadness, while warm reds and oranges can convey passion or energy.
* Creativity and Uniqueness: They allow you to create visuals that are far beyond the traditional portrait, pushing the boundaries of color and light.
* Color Correction: Sometimes used to correct color temperature issues, although this is less common in creative portraiture.
* Types of Gels:
* Full Color: These completely change the color of the light.
* Graduated: These have a gradual change in color, often used for backgrounds.
* Diffusion/Frost: These soften the light and can slightly alter the color, often used with colored gels for a more subtle effect.
* Correction Gels (CTO/CTB): These adjust the color temperature (e.g., CTO (Color Temperature Orange) to warm up a flash to match incandescent light, CTB (Color Temperature Blue) to cool down a flash to match daylight). While less directly "creative," they can be used creatively, too.
2. Gear You'll Need
* Light Source(s): Flashes (speedlights) or strobes are most common. Continuous lights can work, but you'll likely need more powerful ones to achieve the desired effect.
* Colored Gels: Buy a set with a variety of colors. Rosco and Lee Filters are popular brands. Start with a basic set and expand as you experiment.
* Gel Holders/Attachments: These attach to your flash or strobe to hold the gels in place. Many speedlights have magnetic gel holders or use velcro. Strobes often have a slot or clamp system.
* Light Stands: To position your lights.
* Modifiers (Optional): Softboxes, umbrellas, grids, reflectors, snoots, and beauty dishes can all be used in conjunction with gels to shape and control the light.
* Camera and Lens: Choose a lens that suits portraiture (e.g., 50mm, 85mm, or zoom lenses in that range).
* Light Meter (Optional): Helpful for precise exposure, especially with multiple lights.
* Background (Optional): Can be plain, textured, or even use gels on the background for a fully immersive color experience.
3. Planning Your Shot
* Concept: What mood are you trying to create? What story are you telling? Consider the colors you want to use and how they relate to your subject's personality and attire.
* Color Theory: Understanding basic color theory can help you choose effective color combinations:
* Complementary Colors: Colors opposite each other on the color wheel (e.g., red and green, blue and orange, yellow and violet). These create high contrast and visual excitement.
* Analogous Colors: Colors next to each other on the color wheel (e.g., blue, blue-green, green). These create a harmonious and soothing effect.
* Monochromatic: Using different shades and tints of a single color. Can be very elegant and simple.
* Lighting Setup: Decide how many lights you'll use and their positions. Consider the key light, fill light, and any background lights.
* Wardrobe and Makeup: Coordinate the wardrobe and makeup with the colors you're using. Neutral clothing can work well to let the colors stand out, or you can choose clothing that complements or contrasts with the gels.
* Test Shots: Take test shots to dial in your settings and lighting before you bring in your model.
4. Basic Lighting Setups
Here are a few common setups to get you started:
* One-Light Setup (Simple and Effective):
* Place your light with a gel at a 45-degree angle to your subject.
* Use a reflector on the opposite side to fill in shadows, or use a second light with a different colored gel for added drama.
* Two-Light Setup (Popular and Versatile):
* Split Lighting: Place one light with a gel on one side of the subject and another light with a different (or same) gel on the other side. Great for creating dramatic shadows and highlighting different features.
* Key and Fill: Use one light with a gel as your key light (main light) and another light with a different (or no) gel as your fill light to soften shadows.
* Background Light: Use one light with a gel to illuminate the background. This can add depth and separation to your subject.
* Three-Light Setup (Advanced):
* Combine the above techniques for even more control. For example:
* Key light with gel.
* Fill light with or without a gel.
* Background light with a contrasting gel.
5. Key Techniques and Tips
* White Balance:
* Shoot in RAW: This gives you the most flexibility to adjust white balance in post-processing.
* Custom White Balance: Use a gray card to set a custom white balance for each lighting setup. This will give you more accurate colors from the start.
* Experiment: Don't be afraid to embrace the color cast of the gels. Sometimes, "incorrect" white balance can enhance the artistic effect.
* Exposure:
* Check Your Histogram: Make sure you're not clipping highlights or shadows.
* Use a Light Meter: If you're using multiple lights, a light meter can help you determine the correct exposure for each light.
* Test Shots: Take plenty of test shots to fine-tune your exposure.
* Power of the Flash: Adjust the power of your flash(es) to control the intensity of the color. Lower power for a subtle effect, higher power for a more dramatic look.
* Distance: The distance of the light from your subject affects the intensity and spread of the light. Closer light is more intense and creates harder shadows. Further light is less intense and creates softer shadows.
* Gel Strength: Gels come in different densities. A full-strength gel will have a more intense color than a half-strength gel.
* Diffusion: Use diffusion material (like a softbox or diffusion gel) to soften the light and create a more flattering effect.
* Avoid Color Casts on Skin Tones (Optional): While sometimes desired for creative effect, strong color casts on skin can be unflattering. Use less saturated gels, lower the flash power, or use a reflector to bounce some neutral light back onto the subject. You can also selectively desaturate color casts in post-processing.
* Experiment with Placement: Move your lights around to see how the colors interact with your subject's features and the background.
* Post-Processing: Use photo editing software (like Adobe Photoshop or Lightroom) to fine-tune the colors, contrast, and overall look of your images. You can adjust white balance, color saturation, and apply selective color adjustments.
6. Creative Ideas and Experimentation
* Monochromatic Portraits: Use different shades of a single color for a sophisticated and elegant look.
* Split Toning: Use complementary colors on either side of the subject for a dynamic and visually striking effect.
* Color Blocking: Use gels to create distinct blocks of color in the background or on the subject.
* Silhouettes: Use a gelled light behind the subject to create a silhouette.
* Double Exposure: Combine a colored gel portrait with another image for a surreal and artistic effect.
* Multiple Gels Per Light: Layer different colored gels on the same light for unique and complex color combinations.
* Gobo Patterns with Gels: Use a gobo projector (or a homemade gobo) with a gel to project colored patterns onto your subject or background.
* Focus on Details: Use colored gels to highlight specific details of your subject, such as their eyes, hair, or clothing.
* Movement: Experiment with having your subject move during the exposure. This can create interesting light trails and blurs.
* Props: Incorporate props that complement or contrast with the colors you're using.
* Black and White Conversion: Sometimes a very colorful gel setup can look amazing when converted to black and white, giving you unique contrast and tonal ranges.
* Mix with Natural Light: Combine colored gels with existing ambient light for a more natural yet creatively enhanced look.
7. Post-Processing Considerations
* White Balance Correction: As mentioned, RAW shooting gives you the most control over white balance in post. Don't be afraid to experiment!
* Color Grading: Use color grading tools in Photoshop or Lightroom to fine-tune the colors and overall mood.
* Selective Adjustments: Use masks and adjustment layers to selectively adjust the color and brightness of different areas of your image.
* Sharpening and Noise Reduction: Apply sharpening and noise reduction as needed to improve the overall image quality.
In Summary:
Using colored gels for portrait photography is a creative and rewarding process. By understanding the basics of lighting, color theory, and experimenting with different techniques, you can create unique and stunning images that capture your vision. The key is to experiment, have fun, and let your creativity guide you. Don't be afraid to break the rules and try new things!