Showing results for 
Show  only  | Search instead for 
Did you mean: 

77D and Travelite not in sync


For a few years we've been using Travelite 750 strobes with a 60D and an 80D by setting on-camera flash to 1/128 power -- enough to trigger the strobes with effecting the shot. Camera set to ISO 100 and 1/100-sec shutter. However, the same setup with the 77D doesn't work -- although the on-camera flash triggers the strobe, the image captured in the camera does not catch the strobe flash. As if the shutter is operating after the strobe has finished its flash. Changing shutter sync to 2nd curtain has no effect. 



Are you in ETTL? The strobe is probably triggering on the pre-flash

On my 80D, Built-in flash settings shows Flash Mode is set to Manual flash.  On the 77D, however, Built-in flash settings brings up a screen which shows Built-in flash set to NormalFiring -- below which Flash mode shows E-TTL II but this setting is grey-out and cannot be selected.

You probably need to be in one of the "Creative zone" modes, like "P". Menu menu settings are locked out in the auto modes. In the manual, these settings are noted with a '*'.

Flash control is not available in the creative zones.

My reading of the manual is such that you cannot set manual mode for the pop-up flash. You might need a smart flash trigger that ignores the pre-flash.

12/08/2022: New firmware version is available for EOS C70
12/07/2022: New firmware version 1.7.0 is available for EOS R5
11/22/2022: New firmware available for EOS R3, EOS R7 and EOS R10
11/16/2022: We're thrilled to be ranked among the Best Employers for Veterans in 2022 by Forbes.
10/14/2022: Help ensure your autofocus is properly aligned with a Canon Precision Alignment
08/31/2022: New firmware version 1.1.1 is available for RF 70-200mm L IS USM
08/09/2022: New firmware version 1.2.0 is available for CR-N 300
08/09/2022: New firmware version 1.2.0 is available for CR-N 500
07/14/2022: New firmware version 1.0.1 is available for CR-X300
07/01/2022: New firmware version 1.3.0 is available for PowerShot PICK
06/10/2022: Service Notice:UPDATE: Canon Inkjet Printer continuous reboot loop or powering down
06/07/2022: New firmware version 1.3.2 is available for PowerShot G7 X Mark III
06/07/2022: New firmware version 1.0.3 is available for EOS M50 Mark II
05/31/2022: Did someone SAY Badges?
05/26/2022: New firmware version is available for EOS-C500 Mark II
05/26/2022: New firmware version is available for EOS-C300 Mark III
05/10/2022: Keep your Canon gear in optimal condition with a Canon Maintenance Service
05/05/2022: We are excited to announce that we have refreshed the ranking scale within the community!
04/26/2022: New firmware version is available for EOS R5 C
03/23/2022: New firmware version is available for EOS-C70
02/09/2022: Share Your Photos is back!
02/07/2022: New firmware version 1.6.1 is available for EOS-1DX Mark III
01/13/2022: Community Update. We will be retiring the legacy profile avatars on 01/20/2022. Click this link to read more.
01/05/2022: Welcome to CES 2022!