Modeling Flash

When you press the aperture button on the camera, the flash fires continuously for about 1 second. This feature is referred to as modeling flash. This is useful for checking shadows cast on the subject by the flash light and the lighting balance during wireless flash shooting (, ).

  1. Press the depth-of-field preview button on the camera.

    • The Speedlite fires continuously for approx. 1 sec.

Caution

  • To avoid wearing out or damaging flash heads from overheating, do not fire the modeling flash more than 55 times. After firing the modeling flash for the above listed number of times, allow a rest time of at least 50 minutes.
  • After firing modeling flash this many times, further continuous firing at short intervals may activate a safety function that restricts firing. At a firing restriction level of 1, the firing interval is automatically set to approx. 8 sec. If this happens, allow a rest time of at least 50 min.
  • During Live View shooting, firing the modeling flash (by operating the camera) is not possible.
  • When using EOS R series cameras, firing the modeling flash (by operating the camera) is not possible. Set C.Fn-02 to 1 or 2 () and use the test flash button to perform modeling flash.

Note

  • During normal flash shooting or when using the flash as the sender unit in radio transmission/optical transmission wireless shooting, you can fire the modeling flash with the test flash button (C.Fn-02).