https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/99728#M2247 <P>Been playing/testing the functionality of my 5D Mark III and 580EX (not 580EX II). The camera doesn't seem to recognize ETTL from the menu. Are there limitations between these two devices?&nbsp;</P> Sat, 21 Jun 2014 01:26:05 GMT jdd1701 2014-06-21T01:26:05Z https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/99728#M2247 <P>Been playing/testing the functionality of my 5D Mark III and 580EX (not 580EX II). The camera doesn't seem to recognize ETTL from the menu. Are there limitations between these two devices?&nbsp;</P> Sat, 21 Jun 2014 01:26:05 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/99728#M2247 jdd1701 2014-06-21T01:26:05Z https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/100402#M2248 <P>I'm pretty sure that the original 580ex didn't have in-camera menu control.&nbsp; You have to adjust the settings on the flash, not the camera (FEC withstanding).</P> Mon, 23 Jun 2014 15:57:01 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/100402#M2248 Skirball 2014-06-23T15:57:01Z https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/105099#M2249 <P>Hello jdd1701,<BR /><BR />The Speedlite 580EX II and EOS 5D Mark III are compatible in every way they can be, meaning any EX Series Speedlite will work with any EOS camera.&nbsp; You wouldn't be able to adjust the settings through the camera menu like you would with, a Speedlite 600EX, for example.</P> Sat, 19 Jul 2014 01:42:25 GMT https://community.usa.canon.com/t5/Speedlite-Flashes/Will-my-5D-Mark-III-and-580EX-function-together-seamlessly/m-p/105099#M2249 Tim 2014-07-19T01:42:25Z