12-15-2012 11:23 AM
12-17-2012 08:21 AM
Ftenczar,
I am sorry, but Hi Speed Sync is not available with the Speedlite 90EX.
If this is a time sensitive-matter, additional support options are available at Contact Us.
03/26/2024: New firmware updates are available.
EOS 1DX Mark III - Version 1.9.0
12/05/2023: New firmware updates are available.
EOS R6 Mark II - Version 1.3.0
07/31/2023: New firmware updates are available.
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