- When it’s too dark/to fill shadows, you use external flash.
- You don’t need to meter the lighting with the flash.
- It means syncing the camera to the flash through the hot shoot.
- ETTL means Though the Lens Metering; it means a setting that syncs the flash with the camera to give a correct exposure.
- Half of the frame will be too dark.
- Photographers bounce the flash and use a diffuser to soft the light.
- The slave is the connecter that syncs all the lights to each other.
- You should open the aperture when the image is too dark, when it is too light you should close the aperture.