3Setting Speedlite FunctionsN
Shutter synchronization
Normally, set this to [First-curtain synchronization] so that the flash fires immediately after the exposure starts.
If [Second-curtain synchronization] is set, the flash will fire right before the shutter closes. When this is combined with a slow shutter speed, you can create a trail of light such as from car headlights at night. With 2nd curtain synchronization, two flashes will be fired: Once when you press the shutter button completely, and once immediately before the exposure ends. Also, with shutter speeds faster than 1/30 sec., 1st curtain synchronization will automatically take effect.
You can also select [High-speed synchronization] (e). For details, refer to the Speedlite’s instruction manual.
Wireless functions
Wireless flash shooting with multiple Speedlites is possible with optical or radio transmissions. For details, see the wireless Speedlite’s instruction manual (for Speedlite 90EX, etc.).
Flash exposure compensation
See “Flash Exposure ompensation” on page 154.
Flash mode
You can select the flash mode to suit your desired flash shooting.
[E-TTL II flash metering] is the standard mode of EX-series Speedlites for automatic flash shooting.
[Manual flash] is for advanced users who want to set the [Flash output level] (1/1 to 1/128) themselves. Regarding other flash modes, refer to your Speedlite’s instruction manual.