Alex and Justin share a method of reducing the strength of the flash when used as fill-in lighting without altering the overall exposure of the image.
On your Canon 30D:
- Pop up the internal flash
- Press the metering mode
- Using the control dial, set the exposure compensation to reduce the intensity of the flash to the desired amount (negative in this instance) — refer to page 106 of the user guide.
- Note that if you hadn’t activated the metering mode first, setting the exposure compensation will affect the entire exposure rather than just the intensity of the flash