“Is the Speedlite 580EX II compatible with automatic flash exposure on the EOS 6D Mark II? Mine indicates TTL but fires at full power…”
Steve Batho, Australia
BRIAN SAYS… Yes, all Speedlites with EX or EL in the model name will work with your EOS 6D Mark II and provide E-TTL automatic flash exposure. Check you have fitted the flash properly on the camera hotshoe so all the pins line up.
If your flash indicates TTL on the top-left corner of the LCD and not E-TTL, you have a custom function incorrectly set in the flash. Flash C-Fn 5 controls how the flash operates – it should be 0 for E-TTL, 1 for
