1. Understanding the Goal:
* Balancing Ambient Light and Flash: The key is to balance the flash with the existing ambient light (streetlights, shop windows, etc.). You don't want the flash to overpower the scene and make it look like it was taken in a dark studio.
* Controlling Light and Shadow: The flash will provide the primary light source, but you need to control its direction and intensity to create flattering shadows and highlights.
* Creating Depth: Using flash strategically can help to separate your subject from the background and create a sense of depth.
2. Essential Equipment:
* Camera: Any camera with a hot shoe for attaching an external flash will work. DSLRs and mirrorless cameras offer more control, but even some advanced point-and-shoot cameras can work in a pinch.
* External Flash: This is the most important piece of equipment. A speedlight (or speedlite) is a powerful and versatile flash unit that attaches to the hot shoe. Look for one with TTL (Through-The-Lens) metering and manual control.
* Diffuser: A diffuser softens the light from the flash, reducing harsh shadows and making the light more flattering. Common options include:
* Built-in Diffuser/Reflector: Many speedlights have a small pull-out diffuser or reflector.
* Flash Diffuser Caps/Domes: These attach to the flash head and spread the light.
* Softboxes (Off-Camera Flash): These provide the softest light, but they are larger and require off-camera flash triggers.
* Umbrellas (Off-Camera Flash): Another option for soft light, also requiring off-camera triggers.
* Optional, but Highly Recommended:
* Off-Camera Flash Cord/Triggers: Allow you to detach the flash from the camera, giving you more control over light direction. Radio triggers are the most reliable.
* Light Stand: To hold the flash when using it off-camera.
* Reflector: A reflector can bounce light back onto your subject to fill in shadows. A white or silver reflector works well.
* Gel Filters: Used to change the color of the flash, for creative effects or to match the ambient light.
* Tripod: Helps to keep the camera steady in low light, especially when using slower shutter speeds.
3. Camera and Flash Settings:
* Shooting Mode:
* Manual (M): Gives you the most control over both camera and flash settings. Recommended for consistent results.
* Aperture Priority (Av or A): Allows you to set the aperture for depth of field, while the camera adjusts the shutter speed. Good for situations where you want to control the background blur.
* Aperture:
* Wider Aperture (e.g., f/2.8 - f/5.6): Creates a shallow depth of field, blurring the background and isolating the subject. Allows more light in, which can help balance the flash with the ambient light.
* Smaller Aperture (e.g., f/8 - f/11): Increases the depth of field, keeping more of the scene in focus. Requires more flash power.
* Shutter Speed:
* Sync Speed: The fastest shutter speed you can use with flash without causing banding. Typically around 1/200th or 1/250th of a second. Check your camera's manual.
* Lower Shutter Speeds (e.g., 1/60th, 1/30th): Allow more ambient light into the photo, helping to balance the flash. This can create motion blur if your subject or camera moves. Use a tripod if you're shooting below 1/60th.
* ISO:
* Keep it Low: Start with a low ISO (e.g., 100 or 200) to minimize noise. Increase it only if necessary to get a proper exposure.
* Flash Mode:
* TTL (Through-The-Lens): The flash automatically meters the light and adjusts its power. Good for beginners and situations where the lighting is changing rapidly. Use Flash Exposure Compensation (FEC) to fine-tune the flash output.
* Manual (M): You set the flash power manually. Requires more experimentation, but gives you the most control. Start with a low power setting (e.g., 1/16 or 1/32) and increase it until you get the desired exposure.
* Flash Zoom: Zoom the flash head to focus the light or widen it to spread the light. Generally, zoom the flash to match the focal length of your lens. Using a wider zoom can act as a pseudo-diffuser, softening the light.
* White Balance: Set the white balance to match the ambient light (e.g., Tungsten or Fluorescent) or use Auto. You can also use gels on your flash to match the color temperature of the ambient light.
4. Techniques for Taking Night Portraits with Flash:
* On-Camera Flash (Direct):
* Point and Shoot: Simple and convenient, but can create harsh shadows and red-eye.
* Use a Diffuser: Attach a diffuser to the flash to soften the light.
* Tilt the Flash Upwards: Bounce the light off a ceiling or wall to create softer, more diffused light. (This only works indoors with a low, light-colored ceiling).
* Use Flash Exposure Compensation (FEC): Adjust the flash power to fine-tune the exposure. Start with a negative FEC (e.g., -1 stop) to reduce the flash power.
* On-Camera Flash (Bounced):
* Requires a Bounce Card/Reflector: Attach a small card to the flash to direct some of the light forward while bouncing the rest off the ceiling.
* Works Best Indoors: Requires a ceiling to bounce off.
* Off-Camera Flash:
* Place the Flash to the Side: Position the flash to the side of your subject to create more flattering shadows and depth.
* Use a Light Stand: Secure the flash to a light stand.
* Use a Softbox or Umbrella: Attach a softbox or umbrella to the flash to create soft, diffused light.
* Trigger the Flash Remotely: Use a flash cord or radio triggers to fire the flash when you take the picture.
* Dragging the Shutter: This technique involves using a slower shutter speed to allow more ambient light into the photo. This helps to balance the flash with the ambient light and create a more natural-looking image. Use a tripod to avoid motion blur.
* Rear Curtain Sync (Second Curtain Sync): The flash fires just before the shutter closes. This can create interesting motion blur effects, especially when dragging the shutter.
* Fill Flash: Use a low flash power setting to fill in shadows and brighten the subject's face without overpowering the ambient light.
5. Tips for Better Night Portraits:
* Practice, Practice, Practice: Experiment with different camera and flash settings to see what works best for you.
* Consider the Background: Pay attention to the background and make sure it complements your subject. Use a wide aperture to blur the background or find a location with interesting lighting.
* Focus Carefully: In low light, it can be difficult to focus. Use manual focus if necessary or use the focus assist lamp on your flash.
* Communicate with Your Subject: Give your subject clear instructions and make them feel comfortable.
* Watch Out for Overexposure: The flash can easily overexpose the subject's face. Use Flash Exposure Compensation (FEC) to reduce the flash power.
* Post-Processing: You can use post-processing software (e.g., Adobe Lightroom or Photoshop) to fine-tune the exposure, color balance, and contrast of your images.
* Match Ambient Light: If you are in a scene lit by tungsten lights, use a CTO (color temperature orange) gel on your flash to match that color temperature. Otherwise, your subject will look blue compared to the background.
* Don't Be Afraid to Experiment: There are no hard and fast rules for night portrait photography. Be creative and try new things!
Example Settings (Start Here):
Let's say you are shooting in a dimly lit street with some ambient light from storefronts.
* Camera Mode: Manual (M)
* Aperture: f/2.8 or f/4 (for shallow depth of field)
* Shutter Speed: 1/60th (to capture some ambient light - use a tripod if needed)
* ISO: 400 (adjust as needed for proper exposure)
* Flash Mode: TTL
* Flash Power: Start with Flash Exposure Compensation (FEC) at -1 or -2 stops.
* Diffusion: Use a diffuser on your on-camera flash.
* Focus: Single point autofocus or manual. Focus on the eyes.
Important Note: These settings are just a starting point. You will need to adjust them based on the specific lighting conditions and your desired results. The key is to experiment and find what works best for you. Good luck!