1. Understanding Colored Gels
* What are they? Colored gels (also called gels or filters) are transparent sheets of plastic that come in various colors. They are placed in front of your light source (flash or continuous light) to change the color of the light.
* Why use them?
* Mood & Emotion: Colors evoke different emotions. Blue can feel cold or melancholic, red can feel passionate or intense, yellow can feel cheerful.
* Drama & Style: Adding colors can create dramatic lighting effects that are impossible to achieve with natural light.
* Separation: Using different colors on the subject and background can create visual separation and make the subject stand out.
* Corrective Color: Gels can also be used to correct color casts from different light sources (e.g., using a CTO (Color Temperature Orange) gel to warm up the light from a cool-toned flash).
* Types of Gels:
* Color Effect Gels: The most common type, these come in a wide array of colors (red, blue, green, yellow, purple, etc.) to create visual effects.
* Color Correction Gels: Used to adjust the color temperature of your light. Common examples include CTO (Color Temperature Orange - warms light), CTB (Color Temperature Blue - cools light), and Plus Green (corrects for fluorescent light).
* Neutral Density (ND) Gels: These reduce the amount of light without changing the color. Useful when you need to lower the flash power.
* Gel Size and Materials: Gels are typically made of either acetate or polyester. Polyester gels are more durable and heat-resistant, which is especially important for use with hot continuous lights. Sizes vary, so choose sizes that fit your light modifiers.
2. Equipment You'll Need
* Camera: A camera that allows manual control of settings (aperture, shutter speed, ISO).
* Lens: A portrait lens (50mm, 85mm, etc.) is recommended, but you can experiment.
* Light Source(s):
* Speedlights (Flashes): The most common and versatile option. They are relatively inexpensive and portable.
* Studio Strobes: More powerful and offer more consistent light output than speedlights, but are less portable.
* Continuous Lights: LED panels are a popular choice. Halogen lights generate a lot of heat and can melt some gels, so LED is generally safer.
* Light Modifiers:
* Softboxes: Create soft, even light.
* Umbrellas: A more affordable option for softening light.
* Snoots/Grids: Focus the light into a narrow beam.
* Reflectors: Bounce light to fill shadows.
* Gel Holders/Attachments: Many speedlights and strobes have built-in gel holders, or you can use velcro straps or gel holders that attach to the flash head.
* Light Stands: To position your lights.
* Colored Gels: Start with a basic set of primary and secondary colors. Rogue Photographic Design is a popular brand.
* Background: A neutral background (white, gray, black) is a good starting point, but you can also use colored backdrops to complement the gels.
* Optional: Light meter, remote trigger for flashes, tape.
3. Planning Your Shoot
* Concept & Mood: What kind of feeling do you want to create? Choose colors that align with your vision. Research color theory. Complementary colors (e.g., blue and orange) can create striking contrast, while analogous colors (e.g., blue, blue-green, green) create a more harmonious feel.
* Lighting Setup: Sketch out your lighting setup beforehand. Consider:
* Number of Lights: Single light setups are simpler to start with, but multiple lights allow for more complex color combinations.
* Light Placement: Front, side, back, overhead – each position creates a different effect.
* Gel Placement: Which lights will have gels? Which lights will remain neutral?
* Wardrobe & Makeup: The clothing and makeup should complement the colors you plan to use. Avoid overly busy patterns. Consider how the gel colors will affect the skin tone.
* Communication with your Model: Explain your vision to your model. Let them know what mood you are trying to achieve and how they can contribute.
4. Basic Lighting Setups (Examples)
* Single Light Setup:
* Place your light source in front of the subject, slightly to the side.
* Attach a gel to the light.
* Use a reflector to fill in the shadows on the opposite side of the subject's face.
* Variations:
* Move the light further to the side for more dramatic shadows.
* Experiment with different colored gels.
* Two-Light Setup (Split Lighting):
* Place one light on each side of the subject.
* Attach a different colored gel to each light.
* Example: Blue gel on one side, red gel on the other. This creates a dramatic, contrasting effect.
* Three-Light Setup (Subject/Background Separation):
* Two lights in front of the subject (one with a gel, one without or with a different gel).
* One light behind the subject, pointing at the background, with a gel. This will color the background and create separation.
* Example: White light on the subject's face, blue light on the background.
* Rim Light Setup:
* Position one or two lights *behind* the subject, aiming towards the edges of their head/shoulders. Add a gel to create a colored outline.
5. Camera Settings
* Shoot in Manual Mode: Gives you full control over exposure.
* Aperture: Choose an aperture that gives you the desired depth of field (e.g., f/2.8 for shallow depth of field, f/8 for more of the scene in focus).
* Shutter Speed: Set your shutter speed based on the ambient light and the sync speed of your flash (usually around 1/200th or 1/250th of a second).
* ISO: Keep your ISO as low as possible to minimize noise.
* White Balance: Set your white balance to "Flash" or adjust it manually. Experiment with different white balance settings for creative effects. Sometimes setting it to tungsten (or a specific kelvin value) can give very interesting results.
* Metering: Use your camera's meter as a starting point, but be prepared to adjust your settings based on your results. The color of the gels will affect the metering.
6. Tips and Techniques
* Start Simple: Don't try to do too much at once. Begin with a single light and one gel, then gradually add more lights and colors as you become more comfortable.
* Test Shots: Take test shots frequently to check your exposure, color balance, and light placement.
* Gel Strength (Density): Gels come in different densities, which affect how much light they transmit. Darker gels will require more light output.
* Distance and Angle: The distance and angle of the light source will affect the intensity and spread of the color.
* Diffusion: Use diffusion materials (softboxes, umbrellas, etc.) to soften the light and create smoother transitions between colors.
* Flagging: Use flags (pieces of black cardboard or fabric) to block light from spilling onto areas you don't want colored.
* Experiment with Shadows: Use shadows creatively to add depth and drama to your portraits.
* Layering Gels: You can layer two or more gels to create new colors and effects.
* Gobo Projection: Use a gobo (a stencil) to project patterns of light onto your subject or background. You can create your own gobos using cardboard or metal.
* Gel Falloff: Pay attention to how the color fades as it moves away from the light source. This can be used to create interesting gradients.
* Color Theory: Learn about color theory to understand how different colors interact and how they can be used to create different moods.
* Post-Processing: You can further enhance the colors and effects in post-processing software like Adobe Photoshop or Lightroom. However, strive to get as much right *in camera* as possible.
* Practice: The key to mastering colored gel photography is to practice and experiment. Don't be afraid to try new things and make mistakes.
Safety Considerations:
* Heat: Be mindful of the heat generated by your light source. Use heat-resistant gels, especially with continuous lighting. Replace gels that are starting to melt or warp.
* Eye Safety: Avoid looking directly at bright lights.
Creative Ideas to Spark Inspiration:
* Neon Cyberpunk: Bright blues, pinks, and purples for a futuristic feel.
* Film Noir: Use a single, strong, cool-toned light (perhaps with a cyan or blue gel) to create a dramatic, shadowy look.
* Dreamy Pastel: Use soft pastel colors for a whimsical, ethereal effect.
* Color Blocking: Divide the subject's face or body into sections with different colors.
* Underwater Effect: Use blue and green gels with some subtle movement in the background to simulate an underwater environment.
* Horror: Combine red and deep blue or green for a sinister and unsettling atmosphere.
* Product Photography: Use colored gels to highlight the features and colors of your products.
By understanding the fundamentals of colored gel photography and experimenting with different techniques, you can create truly unique and eye-catching portraits that express your artistic vision. Good luck!