I have a Canon Speedlight 380EX and some time ago it stopped syncing correctly. Every photo I take comes out dark as if the flash didn't fire. The flash fires, the IR assist beam works as intended and the E-TTL indicator is on. Tried with two cameras (40D and 70D) with same results.

Is it misconfiguration issue, or malfunction in the flash?


That is an older flash. originally designed for EOS film cameras. Although it has E-TTL, it is probably not worth repairing since you can replace it pretty cheaply.


You can test it by setting the camera to M with a long shutter speed like 1 second. Keep increasing the speed to see if it fails and where.

|improve this answer|||||
  • Older but works just fine with modern EOS cameras. – ysap Jul 26 '16 at 12:19

Your shutter speed must not be higher than 1/125s or it won't be able to see the flash light.

|improve this answer|||||
  • 2
    The flash sync speed isn't 1/125s for those cameras... – John Cavan Apr 27 '16 at 10:27

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.