Artificial flash transforms night into day and solves lighting challenges that no amount of natural light can address. Understanding flash - from pop-up flash to sophisticated studio strobes - opens creative possibilities unavailable any other way.
On-Camera Flash Techniques
Direct flash - pointing the flash straight at your subject - produces harsh, unflattering light with deep shadows. Bounce flash - pointing the flash at a ceiling or wall - creates soft, wrap-around illumination that mimics natural window light. Off-camera flash, triggered remotely, separates light from camera position for more dramatic, dimensional results.
Flash exposure compensation adjusts flash output relative to ambient light. Positive compensation adds flash power for more direct, punchy light. Negative compensation reduces flash, letting ambient dominate for more natural results.
Balancing Flash and Ambient
The key to natural-looking flash photography is balancing flash output with ambient light. Use slow sync (first or second curtain) to include background illumination with flash-lit foreground. High-speed sync enables flash in bright conditions with wide apertures for shallow depth of field.
TTL (through-the-lens) metering automates flash exposure by measuring light reflected off the sensor. It works well in predictable situations but requires compensation in challenging scenes. Manual flash provides consistent, repeatable results once you learn your power settings.