Core Principles:
* Quality of Light: Think about whether you want hard or soft light.
* Hard light creates strong, defined shadows and highlights, resulting in a more dramatic and contrasty look. Use a bare bulb or a small reflector.
* Soft light wraps around the subject, producing gentler shadows and a more even illumination. Use a large softbox, umbrella, or bounce the light off a wall or reflector.
* Placement is Key: One light means precise positioning is critical. Even small adjustments in the light's location will drastically change the look of your portrait.
* Subject-to-Background Distance: The further your subject is from the background, the easier it is to create separation and control the background's darkness.
* Power of the Light: You need to adjust the light's intensity so you can get a good exposure without blowing out your highlights.
* Metering: Use a light meter (if you have one) or rely on your camera's histogram to ensure proper exposure. Adjust your camera settings (ISO, aperture, shutter speed) and the light's power until you achieve the desired look.
Common One-Light Setups (and how to achieve the "inspired" look):
Here are a few popular setups, and how to modify them to create something unique and dramatic.
1. Clamshell Lighting (Butterfly Lighting):
* Setup: Light directly in front and slightly above the subject, angled downward. A reflector is placed below the subject's face to fill in shadows.
* Inspired Look:
* More Power: If you want a slightly harsher and more dramatic look, increase the power of your main light and use a smaller reflector. This reduces the fill effect and creates deeper shadows.
* Move Light to the Side: Shift the light slightly to one side (while still above), creating a stronger shadow on one side of the face.
* Feather the Light: "Feathering" means not pointing the center of the light directly at the subject, but rather slightly off to the side. This creates a softer light on the main part of your face.
2. Side Lighting:
* Setup: Light placed to the side of the subject (at roughly a 90-degree angle).
* Inspired Look:
* High Contrast: This is naturally a contrasty look. Move the light *slightly* towards the front of the subject to get some illumination in the other eye, but still maintain the main shadow.
* Reflector for Fill: Use a reflector on the opposite side to bounce some light back into the shadows. Adjust the reflector's position and size to control the amount of fill.
* Snoot or Grid: Attach a snoot or grid to the light to narrow the beam and create a more focused, dramatic highlight.
3. Rembrandt Lighting:
* Setup: The light is placed at a 45-degree angle to the subject, high enough that it creates a small, triangular highlight on the cheek furthest from the light source. This is all about the classic triangular highlight.
* Inspired Look:
* Deeper Shadows: Move the light further to the side or angle it more downward to deepen the shadows.
* Edge Lighting: Position the light slightly behind the subject to create a rim of light around the edge of their face and shoulders. This separates them from the background.
4. Back Lighting/Rim Lighting:
* Setup: Light placed behind the subject, pointing towards the camera.
* Inspired Look:
* Dark Background: Position the subject far from the background.
* Low Power: Start with a lower power setting on your light and increase it until you achieve the desired rim light effect.
* Hair Light: This works great as a hair light, emphasizing texture and shape. You'll need a second light to provide a key light on the front of the subject.
General Tips for Achieving an "Inspired" Look:
* Dark Backgrounds: Use a black backdrop or make sure the background is far enough away to fall into shadow.
* Underexpose Slightly: In post-processing, consider slightly underexposing the image to enhance the shadows and create a more dramatic mood.
* Experiment with Light Modifiers: Use snoots, grids, barn doors, or flags to shape and control the light.
* Pay Attention to Catchlights: The catchlight (the reflection of the light in the subject's eyes) is crucial. Position the light so that the catchlight is visible and flattering. A single, distinct catchlight usually looks best.
* Post-Processing:
* Contrast: Increase contrast in post-processing to enhance the shadows and highlights.
* Dodge and Burn: Use dodging and burning techniques to selectively lighten and darken areas of the image, emphasizing features and adding depth.
* Black and White Conversion: Convert the image to black and white for a timeless, dramatic look. Pay attention to contrast and tonal range.
Before you start shooting:
1. Plan: Decide what kind of mood you want to create. Do you want dramatic shadows, soft and flattering light, or something in between?
2. Practice: Experiment with different light placements and modifiers until you find a setup that you like.
3. Take Notes: Keep track of your camera settings, light position, and any modifiers you use so that you can recreate the look later.
4. Study: Look at portraits by photographers you admire and try to figure out how they used light to create their signature look.
Key Takeaway: Mastering one-light photography is all about understanding how light interacts with your subject and how to manipulate it to achieve your desired look.