Canon's Speedlite 320EX is a
versatile flash that includes an LED light on the front that can be used
as a modeling light, an AF assist beam during Live View shooting, or to
light up nearby subjects in low light for video recording. It will
provide up to 4 hours of continuous lighting with fully-charged AA
batteries. The 320EX is E-TTL- and E-TTL II-compatible using Type-A EOS
cameras, and it has a guide number of 78.7'/24m @100 ISO at 24mm.
Vertical and horizontal bounce capability gives you more lighting
options, as does the Wireless Slave function that supports 3 groups and 4
channels, allowing the flash to be used off camera. You can vary the
flash coverage and guide number by manually extending or retracting the
flash head, using the Normal or Tele positions. The 320EX operates on
widely available AA batteries. Batteries are not included.