I. Understanding the Basics
* What are Colored Gels? Thin, translucent sheets of colored plastic (typically made of acetate or polyester) used to modify the color of light. They come in a wide array of colors and densities.
* Why Use Gels?
* Mood and Emotion: Colors evoke different emotions. Blue can be calming or sad, red can be passionate or aggressive, yellow can be cheerful, etc.
* Creativity and Style: Gels can drastically alter the look and feel of your portraits, adding a touch of surrealism, drama, or artistic flair.
* Separation and Depth: Using different colored gels on different light sources can help separate your subject from the background and create visual depth.
* Correcting Color Temperature: Some gels are designed to correct or modify the color temperature of your lights (e.g., CTO (Color Temperature Orange) to warm up the light, or CTB (Color Temperature Blue) to cool it down).
* Types of Gels:
* Color Correction Gels: (CTO, CTB) Primarily used to match light sources (e.g., balancing flash with tungsten ambient light).
* Color Effect Gels: A wide range of colors for creative effects.
* Diffusion Gels: Not colored, but used to soften and spread light.
II. Equipment You'll Need
* Lights:
* Strobes/Flashes: The most common and versatile light source. Offer precise control over power and duration.
* Continuous Lights (LEDs, Tungsten): LEDs are increasingly popular due to their low heat and color accuracy. Tungsten lights get very hot and can melt some gels.
* Gels: Purchase a set of assorted colors. Rosco and Lee Filters are reputable brands. Consider a starter set with primary and secondary colors.
* Gel Holders: These attach to your lights and hold the gels in place. Common options:
* Gel Frames: Slide into slots on your flash head or continuous light.
* Clamps/Clothespins: A budget-friendly option for attaching gels to reflectors or light stands.
* Gel Bands/Straps: Wrap around the light.
* Light Stands: To position your lights.
* Reflector(s): To bounce light and fill in shadows. White, silver, or gold reflectors can further modify the light.
* Light Meter (Optional): Helps to ensure consistent exposure and color balance, especially when using multiple lights.
* Camera: Any camera with manual controls (aperture, shutter speed, ISO, white balance) will work.
III. Setting Up Your Lights and Gels
1. Safety First: Be careful when using gels with hot lights (especially tungsten). Ensure the gel holder is properly positioned to prevent melting.
2. Choose Your Color Palette: Decide on the mood and effect you want to create. Consider complimentary colors (e.g., blue and orange) or analogous colors (e.g., blue, blue-green, green) for a cohesive look. Monochromatic color schemes (various shades of the same color) can also be very effective.
3. Single Light Setup (Simple and Effective):
* Key Light (With Gel): Place your main light with the gel attached at a 45-degree angle to your subject. Experiment with the angle and distance for different shadow patterns.
* Background: A neutral background (white, gray, or black) works well. You can also use a colored background to complement the gel.
* Reflector (Optional): Use a reflector on the opposite side of the key light to fill in shadows.
4. Two-Light Setup (More Control):
* Key Light (With Gel 1): As above.
* Fill Light (With Gel 2 or No Gel): Place a second light on the opposite side of the key light to fill in shadows. You can use a different color gel on the fill light for a more dynamic effect. Alternatively, use a white reflector instead of a second light for a softer, more subtle fill.
* Rim Light (With Gel 3 or No Gel): Placed behind and to the side of the subject, creates separation and defines the shape. Often a contrasting color to the key light.
5. Background Light (Creative Options):
* Place a light with a gel behind your subject, aiming at the background, to add color and depth to the background. This is great for separating the subject. Experiment with gradients (feathering the light).
6. Power Settings: Start with low power settings on your lights and gradually increase until you achieve the desired exposure.
IV. Camera Settings and White Balance
* Shoot in RAW: This gives you the most flexibility to adjust colors and white balance in post-processing.
* Aperture: Choose an aperture based on the depth of field you want. Wider apertures (e.g., f/2.8, f/4) will create a shallow depth of field, blurring the background. Smaller apertures (e.g., f/8, f/11) will keep more of the image in focus.
* Shutter Speed: Set your shutter speed to sync with your flash (usually around 1/200th of a second). If you're using continuous lights, adjust your shutter speed to control the ambient light in the scene.
* ISO: Keep your ISO as low as possible to minimize noise.
* White Balance: This is crucial for gel photography.
* Custom White Balance: Ideally, take a custom white balance reading with a gray card *under the light from your gelled light*. This will give you the most accurate color representation.
* Preset White Balance: Try different preset white balance settings (e.g., Tungsten, Daylight, Fluorescent) to see which one looks best.
* Adjust in Post: If you're shooting RAW, you can adjust the white balance in post-processing software like Adobe Lightroom or Capture One. Experiment with the "Temperature" and "Tint" sliders to achieve the desired color balance. Sometimes deliberately incorrect white balance can create a very interesting effect.
* Color Profiles: Choose a color profile that represents the final format you're going for. sRGB is great for web use. ProPhoto RGB is great for advanced editing.
V. Techniques and Ideas
* Color Blocking: Use bold, contrasting colors to create a graphic and modern look.
* Monochromatic Portraits: Use different shades of the same color to create a subtle and elegant effect.
* Split Lighting: Light half of the face with one color and the other half with another color.
* Gradients: Feather the light from a gel to create a smooth transition of color on the background or the subject.
* Combining Colors: Overlap different colored gels to create new colors.
* Negative Space: Use colored light to create interesting shapes and patterns on the background.
* Silhouettes: Light the background with a vibrant color and underexpose the subject to create a silhouette.
* Motion Blur: Use a slow shutter speed and have your subject move during the exposure to create a sense of motion. The colored light will streak across the frame.
* Double Exposure: Combine a portrait lit with gels with another image for a surreal and artistic effect.
* Backgrounds:
* Seamless Paper: Offers a clean, consistent backdrop.
* Fabric Drapes: Add texture and depth.
* Projected Patterns/Images: Use a projector to cast patterns or images onto the background. Add colored gels to the projector light for even more interesting effects.
* Mixing Gels: Use multiple gel types and colors to create secondary colors, gradients, or unique light patterns. Try stacking gels to increase color intensity.
VI. Post-Processing
* Color Correction: Fine-tune the colors to achieve the desired look.
* Dodge and Burn: Enhance highlights and shadows to add depth and dimension.
* Split Toning: Add different colors to the highlights and shadows for a more artistic effect.
* Color Grading: Use color grading tools to create a specific mood and atmosphere.
* Retouching: Clean up any blemishes or imperfections on the subject's skin.
VII. Tips and Considerations
* Experiment: Don't be afraid to try new things and see what works. There are no hard and fast rules when it comes to creative photography.
* Start Simple: Begin with a single light setup and gradually add more lights and complexity.
* Practice: The more you practice, the better you'll become at understanding how colored gels affect light and how to use them effectively.
* Model's Skin Tone: Consider how the colors will interact with your model's skin tone. Some colors may be more flattering than others.
* Communicate with Your Model: Explain your vision to your model so they can understand the look you're trying to achieve.
* Document Your Process: Keep track of your settings, lighting setups, and gel combinations so you can recreate successful looks in the future.
* Inspiration: Look at the work of other photographers who use colored gels for inspiration.
* Clean Gels: Keep your gels clean to avoid any unwanted smudges or blemishes in your images.
By understanding these principles and experimenting with different techniques, you can create stunning and unique portraits using colored gels. Have fun and let your creativity shine!