Chapter 7. Using Flash
The Rebel T2i/550D's onboard flash unit or an accessory Canon EX-series Speedlite extends your creative opportunities with the Rebel in many different scenes. And with the nice compliment of flash settings and options on the Rebel, you can get natural-looking results whether you're shooting indoors or outdoors, particularly when you're using P, Tv, Av, and M shooting modes.
To light this glass of wine, I used Christmas lights behind fabric for the background, and then I used a Speedlite to light the front of the glass. Exposure: ISO 200, f/8, 1/6 second.
This chapter explores flash technology, details the use of the T2i/550D's onboard flash, and covers the menu options for both the built-in flash and for accessory EX-series Speedlites. The focus of this chapter is on fundamental flash techniques and ideas for using flash for both practical situations and creative effect.
Exploring Flash Technology
Both the onboard flash and Canon's EX-series Speedlites employ E-TTL II technology. E-TTL stands for Evaluative Through-the-Lens flash exposure control. E-TTL II is a flash technology that receives information from the camera, including the focal length of the lens, distance from the subject, and exposure settings including aperture, and then the camera's built-in Evaluative metering system balances subject exposure with the existing light in the scene.
Figure 7.1. For ...
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