I. Essential Equipment:
* Camera: Any DSLR or mirrorless camera with manual mode and a hot shoe will do.
* Lens: A portrait-friendly lens, such as a 50mm, 85mm, or zoom lens in that range (e.g., 24-70mm) is ideal. Faster apertures (f/2.8 or wider) allow for shallower depth of field and pleasing background blur.
* Flash (Speedlight): Get a speedlight with manual power control. TTL is helpful, but you'll want to be able to adjust the flash power yourself for consistency.
* Light Stand: A light stand is crucial for positioning your flash. Get a sturdy one.
* Modifier (Umbrella or Softbox): This is *essential* for softening the harsh light from the bare flash. An umbrella is a good starting point as they are inexpensive and portable. A softbox is also a great choice but can be more expensive.
* Trigger (if needed): If you want to position the flash off-camera, you'll need a trigger. This could be a simple radio trigger, or even a sync cord (less flexible).
* Optional but Recommended:
* Reflector: A reflector (white, silver, or gold) to bounce light back onto your subject and fill in shadows.
* Gray Card: For accurate white balance.
* Light Meter: Helpful for precise flash power settings (especially when learning).
* Sandbag for Light Stand: To prevent your light stand from tipping over.
II. Basic Techniques:
1. Camera Settings:
* Mode: Manual (M)
* Aperture: Choose an aperture based on the depth of field you want. Wider apertures (e.g., f/2.8, f/4) will create shallower depth of field, blurring the background. Smaller apertures (e.g., f/8, f/11) will keep more of the image in focus.
* ISO: Keep the ISO as low as possible (typically ISO 100 or 200) to minimize noise.
* Shutter Speed: Your shutter speed will primarily control the ambient light in the scene. The flash duration is so short that it essentially freezes the subject. Generally, start around 1/125th or 1/200th of a second and adjust to control the background brightness. *Important: Be sure not to exceed your camera's maximum sync speed* (usually around 1/200 or 1/250). Going faster than this will result in dark banding in your image.
* White Balance: Set your white balance based on your lighting conditions. "Flash" is often a good starting point. Using a gray card is ideal for precise white balance.
2. Flash Settings:
* Mode: Manual (M). Start here and learn to control the flash power yourself.
* Power: Start with a low power setting (e.g., 1/16 or 1/32) and gradually increase it until you get the desired exposure. Use your camera's histogram and the LCD screen to evaluate the brightness of your subject.
* Zoom: The zoom setting on your flash controls the spread of the light. Zooming in will concentrate the light, increasing its intensity and creating a smaller hotspot. Zooming out will spread the light, decreasing its intensity and creating a wider, softer light. Adjust it in conjunction with your modifiers and desired light output.
3. Lighting Positions (using your single flash):
* On-Camera Flash (Avoid if Possible): Produces flat, unflattering light with harsh shadows. It's a last resort.
* Off-Camera (Preferred): Provides much more control and creates more dynamic and interesting portraits.
* 45-Degree Angle (Classic): Position the flash at a 45-degree angle to your subject, slightly to the side and slightly above their eye level. This creates pleasing shadows that define their features. This is a great place to start.
* Loop Lighting: Similar to 45-degree, but position the light so the shadow of the nose forms a small loop on the cheek. Flattering for many face shapes.
* Rembrandt Lighting: Position the light to create a small triangle of light on the cheek opposite the light source. Dramatic and creates a strong sense of depth.
* Broad Lighting: Position the light to illuminate the side of the face that is closest to the camera. Makes the face appear wider.
* Short Lighting: Position the light to illuminate the side of the face that is furthest from the camera. Makes the face appear slimmer.
* Butterfly Lighting: Position the light directly in front of the subject, slightly above their head. Creates a butterfly-shaped shadow under the nose.
4. Using a Modifier:
* Umbrella: Position the flash so that the light bounces off the inside of the umbrella towards your subject. Umbrellas are inexpensive and provide a relatively large light source, resulting in softer shadows. Shoot-through umbrellas (translucent) can be used closer to the subject for a softer light.
* Softbox: Position the softbox so that the light shines directly through the diffusion panel towards your subject. Softboxes create a more controlled and even light than umbrellas.
* Bounced Light: You can also bounce your flash off a wall or ceiling (if they are white or neutral in color). This creates a very soft and diffused light, but you'll need to increase the flash power significantly.
5. Fill Light (Using a Reflector):
* Position the reflector opposite the flash to bounce light back onto your subject's face and fill in the shadows. You can hold it yourself, have your subject hold it, or use a reflector holder.
* Silver reflectors provide a bright, specular (mirror-like) fill.
* White reflectors provide a softer, more diffused fill.
* Gold reflectors add warmth to the light.
III. Workflow and Tips:
1. Start Simple: Begin with a basic 45-degree lighting setup with an umbrella and reflector.
2. Shoot in Manual Mode (Camera and Flash): This gives you complete control over the exposure and lighting.
3. Set Ambient Light First: Adjust your shutter speed to control the brightness of the background.
4. Adjust Flash Power for Subject Exposure: Adjust your flash power to properly expose your subject.
5. Use the Histogram: Check the histogram on your camera's LCD screen to ensure you're not clipping highlights or shadows.
6. Take Test Shots: Take a few test shots and adjust your settings as needed.
7. Move the Light: Experiment with different lighting positions to see how they affect the look and feel of your portraits.
8. Focus Carefully: Make sure your focus is sharp on your subject's eyes.
9. Communicate with Your Subject: Direct your subject to pose naturally and relax.
10. Practice, Practice, Practice: The more you practice, the better you'll become at understanding and controlling light.
IV. Example Scenario:
1. Setup: You're shooting indoors in a room with decent ambient light.
2. Equipment: Camera with 50mm lens, speedlight, light stand, umbrella, reflector.
3. Camera Settings: Manual mode, ISO 100, aperture f/2.8 (for background blur), shutter speed 1/125th second (adjust to control background brightness), white balance set to "Flash".
4. Flash Settings: Manual mode, power 1/8 (start here and adjust), zoom 50mm.
5. Lighting: Position the light stand with the flash and umbrella at a 45-degree angle to your subject, slightly above eye level. Place the reflector opposite the flash to fill in the shadows.
6. Shooting: Take a test shot and adjust the flash power as needed to properly expose your subject. Adjust the shutter speed to control the brightness of the background. Direct your subject to pose naturally.
V. Common Mistakes to Avoid:
* Harsh, Direct Flash: Always use a modifier to soften the light.
* Overpowering the Flash: Start with a low flash power setting and gradually increase it.
* Ignoring Ambient Light: Pay attention to the ambient light in the scene and adjust your shutter speed accordingly.
* Poor Focus: Always focus carefully on your subject's eyes.
* Unnatural Posing: Encourage your subject to relax and pose naturally.
* Forgetting to Charge Batteries: Nothing is worse than a dead flash battery midway through a shoot.
By following these guidelines and practicing regularly, you can create fantastic portraits with just one flash! Good luck and have fun!