* Focused light: Emphasizes specific features, creating strong shadows.
* Subtle skin texture: Preserved skin detail.
* Mood: Perhaps a hint of mystery or intensity.
* Catchlight: A distinct catchlight in the eyes.
Here's a step-by-step approach, keeping in mind this is a starting point, and you'll need to adjust based on your specific subject and gear:
1. Gear You'll Need:
* One Light Source: This could be a strobe (studio flash), speedlight (flash gun), or even a constant light (LED panel or even a strong lamp in a pinch). A strobe or speedlight will give you more power and control.
* Modifier: This is crucial for shaping the light. Options include:
* Softbox: Creates a softer, more diffused light. A medium-sized softbox (around 24x36 inches) is a good starting point.
* Umbrella: Can be used in shoot-through or reflective mode. Shoot-through provides a softer light, while reflective can be more directional depending on the umbrella's interior.
* Beauty Dish: A beauty dish delivers a light that is somewhat between a softbox and bare bulb.
* Reflector: White foam board or a foldable reflector to bounce light back into the shadows.
* Light Stand: To position your light source.
* Camera: A DSLR or mirrorless camera gives you maximum control.
* Lens: A portrait lens (e.g., 50mm, 85mm, or 100mm) is ideal.
* Optional - V-Flat or Black Foamcore: Used to add negative fill or to control the light in other ways.
* Optional - Grid or Snoot: If you have a light modifier like a reflector or softbox, then you can add a grid to focus the light into a more narrow beam.
2. Camera Settings:
* Aperture: Aim for a shallow depth of field (e.g., f/2.8, f/4, or f/5.6) to blur the background and isolate your subject.
* ISO: Keep it as low as possible (e.g., ISO 100 or 200) to minimize noise.
* Shutter Speed: Set it to your camera's flash sync speed (usually around 1/200th or 1/250th of a second). If you're using constant light, adjust the shutter speed to achieve the desired exposure.
* White Balance: Set this to daylight or flash to get accurate colors.
* Shooting Mode: Manual mode (M) is recommended for maximum control over both aperture and shutter speed.
3. Light Placement and Setup:
This is where the magic happens. Here are a few common approaches, and you'll need to experiment to see what works best for your subject and style:
* 45-Degree Angle: Position the light at a 45-degree angle to the subject's face, slightly above eye level. This is a classic setup that creates a flattering shadow on one side of the face. The light should be placed at a distance that gives you good light coverage while also providing a reasonable amount of power from your light source.
* Side Lighting (Rembrandt Lighting): Place the light to one side of the subject, creating a small triangle of light on the cheek opposite the light source. This is a more dramatic and moody look. Experiment with the angle of the light. Bringing it more towards the side will make the lighting more dramatic.
* Clamshell Lighting (with a Reflector): Position the light above the subject's face, angled down. Place a reflector below the subject's face to bounce light back up and fill in shadows. This creates a softer, more flattering light, often used in beauty photography.
* Back Lighting Position the light behind the subject and pointed toward the camera. Use the light to highlight the subject's hair.
4. Metering and Exposure:
* Flash Meter (if using a strobe): Use a flash meter to get an accurate reading of the light output. This is the most reliable way to ensure proper exposure.
* Test Shots and Histogram: Take test shots and check the histogram on your camera's LCD. Adjust the light power or your aperture until the histogram shows a good range of tones, without clipping (blowing out highlights or crushing shadows).
* Evaluate The Light: Look at the way the light wraps around the subject's face. What is the size of the catchlight in the eye? Is the lighting too harsh? You'll want to continue to adjust the light and/or light modifier to get the effect you're looking for.
5. Posing and Expression:
* Direct the Subject: Provide clear and specific directions to your subject.
* Facial Expression: Pay attention to their facial expression. Encourage them to relax and express natural emotions. A slight smile or a thoughtful gaze can make a big difference.
* Angles: Experiment with different angles. Have them turn their head slightly towards or away from the light.
6. Post-Processing (Editing):
* Basic Adjustments: Adjust exposure, contrast, highlights, and shadows in your editing software (e.g., Adobe Lightroom, Capture One).
* Color Correction: Adjust white balance and color tones to achieve the desired look.
* Retouching: Subtly smooth skin and remove blemishes, if desired. Aim for a natural look.
* Sharpening: Apply a touch of sharpening to bring out details.
* Dodge and Burn: Use dodge and burn techniques to further sculpt the light and shadows, enhancing the depth and dimension of the portrait.
Tips for Achieving a Specific Style:
* High Contrast: Use a smaller light source or move the light further away to create harder shadows.
* Softer Light: Use a larger softbox or umbrella, or move the light closer to the subject.
* Moody Portraits: Use a dark background, side lighting, and deeper shadows.
* Beauty Portraits: Use clamshell lighting and focus on even skin tones and flattering angles.
Key Considerations:
* Experimentation is Key: Don't be afraid to try different light positions and modifiers to find what works best for your subject and your style.
* Subject's Features: Consider the subject's facial structure and how the light will interact with their features.
* Background: The background should complement the portrait and not distract from the subject. A plain background is often a good choice for single-light portraits.
* Practice: The more you practice, the better you'll become at understanding how light works and how to use it to create stunning portraits.
By following these steps and experimenting with your setup, you'll be well on your way to creating beautiful single-light portraits that capture the essence of your subject. Good luck!